They have a Twitter account, but no updates on it recently.
I have an OBi200 with GV, and have the same problem. I was able to receive a call Wednesday afternoon, then that stopped working within 30 minutes of the last call I received. Today I tried to place a call, and see the same Token Error mentioned. The token error also shows up in my dashboard.
I would imagine this would be affecting everyone, I'm surprised not to see more comments about this?