Hi, @Fahimulkabir This is very odd since we have not received reports about this. Could you please try some basic troubleshooting like clearing cookies and cache and trying again? To submit the tax form you should follow these steps:
1. Navigate to your Payout settings page, and click Submit tax documentationto begin the submission process.
2. You will be guided through the submission process on the secure, Comply Exchange platform.
If after trying basic troubleshooting steps you keep getting the error, please take a screenshot and reach out to our Instructor Support team they will be able to assist you.