onda v712 cant access google / play

[sawliza]

hi everybody / anybody i received an onda v712 v2 tablet but google / play / facebook wont work i can access yahoo 7 and all other internet sites but not google / i read a forum last night from someone else who just bought one and had trouble and followed there answer given to them buy downloading new firmware and rebooting system which i have done about 4 times and again every thing else works but google play still / i bought my son a onda v701 and it lost google after a couple of weeks and did exactly the same above with correct firmware and instructions the same as v712 from a very helpful person and it works better than ever now but wont work on my new v712 , can someone help please , thanks sean.