I have just revoked access to Android on https://accounts.google.com/IssuedAuthSubTokens
When I go into AP, I still get the same 401 message. I then used AP to select the GR account to use, which completed without an error, but I was expecting to have to give authorization to AP again, but nothing was requested.
I tied to sync to GR again, but am still getting the same 401 message.
No further forward I am afraid......