Troubleshooting
Redemption errors
Every AppSumo redemption error message, what causes it, and how to fix it.
Use this page when redeeming your AppSumo license shows an error. Find the exact message you see, then follow the fix. Messages appear in red on the AppSumo License page at contral.ai/appsumo/redeem.
Tip
Most redemption problems are fixed by going back to your AppSumo products page, clicking Activate on Contral again, and signing in with the right Contral account. Activating again never uses up or duplicates your license.
Quick reference: AppSumo redemption error messages#
| Message you see | What it means | Fix |
|---|---|---|
| We couldn't verify your AppSumo purchase. Please try connecting your license again. | AppSumo's sign-in handoff to Contral failed or was reused. | Activate again from AppSumo |
| This redemption link expired. Open your AppSumo purchase and activate again. | More than 24 hours passed since you clicked Activate. | Activate again |
| This license is already linked to another account | The license was redeemed by a different Contral account. | Sign in with the original account |
| This account already has a different AppSumo license | The Contral account you're signed in with already holds a license. | Use the right account or upgrade instead |
| This license has been deactivated | The purchase was refunded on AppSumo. | See deactivated licenses |
| License not found | Contral hasn't received your purchase from AppSumo yet. | Wait a few minutes, then activate again |
| License has no valid tier | Contral received the license without a tier. | Contact support |
| No AppSumo license token found. Please use the redemption link from your AppSumo purchase. | You opened the redeem page directly, not from AppSumo. | Start from AppSumo |
| Network error while redeeming your license. Please try again. | Your browser couldn't reach Contral. | Retry |
| Redemption failed / Redemption failed. Please contact support. / Something went wrong linking your AppSumo license. | An unexpected server error. | Retry, then contact support |
| Malformed token / Invalid token signature / Invalid token / Missing token | The redemption link was cut off or changed. | Activate again |
| Unauthorized | Your sign-in session didn't reach the server. | Sign in again |
We couldn't verify your AppSumo purchase#
Full message: "We couldn't verify your AppSumo purchase. Please try connecting your license again."
Cause: When you click Activate on AppSumo, AppSumo sends Contral a one-time authorization code. This error means Contral couldn't exchange that code with AppSumo. The most common reasons are refreshing the page, using the browser's back button, or opening an old Activate link, since each code works only once. A temporary problem on AppSumo's side can also cause it.
Fix:
- Go to appsumo.com/account/products.
- Click Activate on Contral again and approve the request.
- Don't refresh the page while it says "Linking your AppSumo license…".
If it fails twice in a row, wait 10 minutes and try once more, then contact support.
This redemption link expired#
Full message: "This redemption link expired. Open your AppSumo purchase and activate again."
Cause: The redemption link is valid for 24 hours after you click Activate. This usually happens when an email sign-up wasn't verified the same day.
Fix: Click Activate on AppSumo again. If you already created your Contral account, just sign in with it; you don't need to sign up again.
This license is already linked to another account#
Full message: "This license is already linked to another account"
Cause: Your license has already been redeemed, but by a different Contral account from the one you're signed in with now. Each license links to exactly one account. This usually means you redeemed earlier with a different sign-in method or email, for example Google the first time and email and password now.
Fix:
- Sign out of contral.ai.
- Sign in with the account you used the first time. Try each method you might have used: Google, GitHub, and email and password.
- Open the dashboard. The correct account shows an AppSumo Tier badge.
If you can't find the original account, or you need the license on a different email address, contact support. Include your AppSumo order email and both Contral email addresses.
This account already has a different AppSumo license#
Full message: "This account already has a different AppSumo license"
Cause: The Contral account you're signed in with already has an AppSumo license, and you're trying to redeem a second one. A Contral account holds one license at a time.
Fix:
- Bought a second code to get higher limits? Licenses don't stack on one account. Upgrade your existing license instead. See Upgrade or change your tier.
- Meant to give the second license to someone else? They need to redeem it while signed in to their own Contral account. Sign out first, then have them click Activate from the AppSumo account that owns the license.
- Your earlier license was refunded and you bought again? Contact support so we can clear the old, deactivated license from your account.
This license has been deactivated#
Full message: "This license has been deactivated"
Cause: The license was refunded or deactivated on AppSumo. Deactivated licenses can't be redeemed.
Fix: If you didn't request a refund, check your purchase status on AppSumo or contact the AppSumo Help Center. See Refunds & deactivation.
License not found#
Full message: "License not found"
Cause: Contral learns about each purchase from AppSumo in the background. If you click Activate within moments of buying, that notice may not have arrived yet.
Fix: Wait 5 minutes, then click Activate on AppSumo again. If it still says "License not found" after 30 minutes, contact support with your AppSumo order email.
License has no valid tier#
Full message: "License has no valid tier"
Cause: Contral received your license from AppSumo without a tier it recognizes (Tier 1, 2 or 3).
Fix: This needs a manual check. Contact support with your AppSumo order email and the tier you bought.
No AppSumo license token found#
Full message: "No AppSumo license token found. Please use the redemption link from your AppSumo purchase."
Cause: You opened contral.ai/appsumo/redeem directly, from a bookmark, or from a link that lost its token. The page only works when AppSumo sends you there.
Fix: Start from appsumo.com/account/products and click Activate on Contral.
Network error while redeeming your license#
Full message: "Network error while redeeming your license. Please try again."
Cause: Your browser lost its connection to Contral, or a browser extension, VPN or firewall blocked the request.
Fix: Check your connection, disable ad or script blockers for contral.ai, and click Activate on AppSumo again.
Redemption failed#
Messages: "Redemption failed", "Redemption failed. Please contact support." or "Something went wrong linking your AppSumo license."
Cause: An unexpected error on Contral's side, or your sign-in session expired while the page was open.
Fix:
- Click Activate on AppSumo again.
- If it fails again, sign out of contral.ai, sign back in, and repeat.
- Still failing? Contact support with the time it happened and your Contral email address.
Malformed token or invalid token signature#
Messages: "Malformed token", "Invalid token signature", "Invalid token" or "Missing token".
Cause: The redemption link was shortened, cut off, or edited, for example when it was copied between devices or passed through a link checker.
Fix: Don't copy the redemption URL by hand. Click Activate on AppSumo again in the browser where you want to sign in.
Unauthorized#
Full message: "Unauthorized"
Cause: The redemption page couldn't send your Contral sign-in to the server.
Fix: Sign out of contral.ai, sign in again, and click Activate on AppSumo again.
Sign-in problems during redemption#
These messages appear on the Contral sign-in or sign-up page while you redeem:
| Message | Fix |
|---|---|
| Please verify your email before signing in. Check your inbox for the verification link. | Open the verification email Contral sent and click the link, then sign in. |
| An account with this email already exists | You already have a Contral account. Click Sign in instead of signing up, using your existing method. |
| Invalid email or password / Incorrect password | Use Forgot password? on the sign-in page to reset it. |
| Sign in was cancelled | The Google or GitHub popup was closed. Click the button again and finish in the popup. |
| Too many attempts. Try again later | Wait a few minutes before trying again. |
| This link has expired. Please request a new one. | Your email verification link expired. Sign in, then use Send Verification Email on the dashboard banner. |
| This link is invalid or has already been used. | The verification link was already used. Try signing in; your email is probably verified already. |
If Google or GitHub sign-in shows "An error occurred. Please try again", you may already have an account with the same email under a different sign-in method. Sign in with the method you used originally.
Buying a monthly plan shows an AppSumo message#
Message: "Your account has an AppSumo lifetime license. Upgrade your tier from your AppSumo account instead."
Cause: You tried to start a Contral subscription on an account that already has an active lifetime license. Lifetime accounts change plans only through AppSumo.
Fix: Upgrade your tier at appsumo.com/account/products. See Upgrade or change your tier.
Still stuck? Ask the support assistant in the corner of this page, or open a support ticket.