Hi, this is an awesome rom, which runs insanely smooth for me. But i can't do in-app purchases, don't know why. I've just wipe system, data, then installed rom and the gapps you link in first post, no magisk, no root, not anything else.
But i receive a message when i try to buy something:"
You are attempting to make a purchase with a device that is not secure. to ensure your account security, please try again on the device which you normally make purchases. If you have any questions, please contact support."
So you guys are my support xD
Ah and also a bug: Out of nowhere, the keyboard stopped working even with reboot. I've downloaded swiftkey from pc and installed in the tablet.