Mobista, and you will tell me what to do when in the google account manager, in the tab, enter your e-mail address and password: Error ?? I have it in two models - Kiano with andro 6.0 and Xcover 4 andro 7.0. I've already put in other google account managers and it's still the same. I have a Z3X for Samsung, but it does not support FRP for this model. Thanks in advance.