We have been using a few appsheet apps, they were working normally until 2 days ago (28 May 2025). Suddenly all apps stopped working with error 401:
{ "error": { "code": 401, "message": "Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.", "errors": [ { "message": "Invalid Credentials", "domain": "global", "reason": "authError", "location": "Authorization", "locationType": "header" } ], "status": "UNAUTHENTICATED" } }
The apps use google sheets in my own gdrive folder as datasource. I am able open up the sheets through google drive webpage, but when I tried to browse through appsheet data source, i got error 403: You do not have access to this page.
Then, I tried to create a new app, but also gave an error "non-2xx status code: /api/template/createApp".
I found this similar case from last year: https://www.googlecloudcommunity.com/gc/AppSheet-Q-A/Support-Package-401-Error-Application-Load-Issu... but when I contacted Google Workspace support, but they said that all services are normal. So they suggested me to contact Google Cloud support, which we have no idea why since we do not use google cloud services nor touched its configuration.
Any help is appreciated. Thanks.
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