I had this type of a problem and raised a support issue last October. Obi support told me it was likely because my Google account is in a private domain - not the regular gmail domain. The work around is to reconfigure the Obi every time we move location. I can only have one Obi active at a time.
You can simply transfer your Google Voice phone number to a regular Gmail.com account. It's free, and it takes place immediately. Only the number will transfer; your settings, contacts and saved messages will stay with the original account. Here are the instructions:
https://support.google.com/voice/answer/3527591?hl=en&ref_topic=1708124Also, you can have multiple OBi 200 or 202 models signed into the same Gmail/GV account at the same time.