> For the complete documentation index, see [llms.txt](https://sdk-doc.tyrads.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sdk-doc.tyrads.com/v3.0/questions-and-troubleshooting/known-issues.md).

# Known issues

## An Operation fails with exception "No offers available".

Your device has been blocked. If it was registered as a test device, please inform us so we can investigate and resolve the issue. Otherwise, follow these steps:

1. Uninstall the app that includes the SDK, ensuring all associated data is removed from automatic backups.
2. Reset your GAID by navigating to **Settings > Google > All Services >Ads** and selecting **Reset Ad-ID**.
3. Re-register your device as a test device using the new GAID (refer to the instructions above for guidance).

## You don't see recommended offers in the offerwall

There is 2 cases on this issue: 

* Your device has been blocked, In this case, follow the steps outlined under the  [An Operation fails with exception "No offers available.](https://app.gitbook.com/o/DuOKLqs5YxgaistFStF6/s/PEsDp5pPpMUHLOxxY7Tw/~/changes/2/questions-and-troubleshooting/known-issues#an-operation-fails-with-exception-no-offers-available)
* There are not active offers associated with your account.

## IFrame Error Messages

* **"No token was provided. Please check your request"**
* **"Your session has expired or the token provided is invalid"**

These errors occur when the **JWT token is missing or has expired**.

#### How to Resolve

* You must request a **new JWT token** from our authentication endpoint for **each user** and **each time they access the offerwall**.
* Each JWT token is valid for **7 days only**. After expiration, a new token must be generated to avoid these errors.

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