Gmail Api token and Scope problem

ok i have set up the gmail api on two servers. [login to view URL] [login to view URL] a token is generated and both sites work perfect after 1 hour token stops on [login to view URL] and when a refresh token is generated this scope stops working $client->addScope("[login to view URL]"); $client->addScope("[login to view URL]"); Need an experience google api coder to solve this one