That link is a fix for a separate broken GV account on an OBi100. Google made a change that broke GV and OBiHai probably won't provide a fix for the end-of-life series 100 products. I think you just want to use the current GV account on the OBi200. You need some minor changes to the OBi200. Use the changes for the OBi100 from the link.
OBi200
Voice Services -> SP1 Service -> X_InboundCallRoute: ph,pp(200222222)
Voice Services -> OBiTalk Service -> InboundCallRoute:
{200222222:sp1},{ph}