Unable to login to Insync Ubuntu 20

Insync was always showing the sync icon even though all files were in sync.
So I had to uninstall and reinstall Insync to try to fix the problem.

Now I am unable to login to Insync even though the permissions are provided in Google.

It’s always stuck on the below screen. The alternate login method also does not work.
image

Looks like it automatically started working after some time.