I'm having the same problem. I set up a replacement phone. I was initially able to login to Google Drive, but the Oruxmaps backups were failing. I then deauthorised Google Drive in the Oruxmaps settings and tried to login again, but the login link does not do anything now.
Strangely, Oruxmaps continues to try to copy backups to Google Drive every day, but times out.
Strangely, Oruxmaps continues to try to copy backups to Google Drive every day, but times out.