Both Google Voice and ObiTalk seem configured fine individually.
My only Google device is web and the web interface and phone forwarding works.
The ObiTalk 200 seems configured fine.
The test number works and the SP1 setup to Google Voice Set- Up Status: connected
free ringtones (https://phoneringtones.info/)
The Legacy options and old forum solution seem to be gone ?
Maybe you could delete the Obi200 from Obitalk then add it back to Obitalk with Google Voice again. This worked yesterday in my case.