When publishing a Coda doc to a custom domain, sign-in via Google Auth fails with a “Forbidden” error. Seems redirects from the custom domain to Google’s Auth page don’t work. Has anyone resolved this? Are there any specific settings for redirect URIs or Coda’s OAuth configuration I should check?
I initiate authentication via button’s SignUpForCoda() formula action, which shows the login dialogue as expected, but further redirects do not work.
If I understand correctly, the “Forbidden” response comes from Coda server, not yet from Google, because the custom domain does not match with expected coda.io/login/google?domain; maybe the http headers conflict.
If this is an “expected” behaviour, then will it work if I update to the Enterprise plan?
FYI, What I am trying to achieve is the possibility for visitors to click the Sign In button, authenticate themselves, and then to be able to proceed to a Coda form for registering for our educational programme.
