Thanks for the suggestions, QBZ
Customer support sent me the following instructions, which helped. I'm reposting them here in case anyone has a similar problem.
Perhaps it would be a good idea to post these instructions in the FAQ, unless I missed them?
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Since the device has been factory reset, you'd need to reconfigure it again.
Let's start over:
- factory reset your OBi by dialing ***8 and press 1 to confirm
- login to
obitalk.com- ADD DEVICE, and follow all the steps with **5 xxxx (it does not matter
whether you already have it in the dashboard, this step is still needed to
bind the device to obitalk).
- Click on SP1, and select Google Voice
And reenter your gmail username/passwd into the appropriate fields, and hit
Submit.
Once the SP1 GV status becomes "Connected", you are good to go.