The Live Forms Online Cloud server was upgraded to Live Forms v126.96.36.199 and Google Connector 2.0 on Tuesday March 10, 2015 10:00 pm ET.
By April 20, 2015, all customers must Migrate their forms/flows to work with the frevvo Google Connector 2.0. Until April 20th forms/flows will continue to work unchanged. See this Notice from Google for why this change is needed.
Please follow this link to see the steps you need to follow by April 20, 2015 -- Migrate your forms/flows to work with the frevvo Google Connector 2.0.