Question [Q] Google Play No Connection Problem

Hi all, I have ported MT6589 TORNADO NEXUS V2 Rom to my device with the permission of the owner. After porting I am having trouble with Google Play. So many times i have changed the base rom but Always says No Connection Retry. even i have tried all the solutions mentioned before on xda or else . tried to delete hosts file , editing it. clearing data of google play , reinstalling with the latest google play version etc. but not have any success yet . Please help me , what i should do to handle with that google play no connection problem. Thanks in advance.