We have implemented a fix so that OpenSolver for Google Sheets should now be accessible and working again.
It seems that some of the comments in our code were causing an OAuth scope /auth/script.scriptapps – which we do not need or use – to be detected. These comments have now been removed, so we expect error messages like “Sign-in with Google temporarily disabled for this app” to stop appearing.
We’d greatly appreciate it if you could test that it now works. Please comment below if OpenSolver for Google Sheets works for you, or if you encounter any issues, or if you have any other questions.