Ok so £35 has bought me an old but perfect condition asus 8 inch tablet, I've created a new google account, finally got the app installed and working. Then around the houses trying set up a payment method, gave up on that and bought a gift card, sent it to the new email address, and it's finally working. Just gotta buy the converter cable, and wait for the obd device I've bought for my car to arrive, and all should be ok. I hope.One thing I have learned - google and android are the bastard sons of the devil himself.