I also experienced the "OFFLINE" problem earlier today on two of three OBi devices that were all functioning properly. On my OBi202, SP1, which is GV with a ported in number, was OFFLINE while SP2, with a GV assigned number was normal. On an OBi100, with PhonePower as SP1, everything was normal. The third device, an OBi200, with GV as SP1, and with a ported in number, also reflected the OFFLINE status.
Is this coincidental or is there a problem when GV is the SP and you have ported in a number?