JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
The error OAuth2 token is caused by expired tokens in Google Integration. Please check your Google integration like the Google Drive or Google Spreadsheet and re-integrate to solve the problem.
You can follow the guide below.
1. Click on the "integrations" icon
2. Select your Google Spreadsheet/Google Drive integration, then remove it.
I hope that helps. Do let us know if you need more information on this.