On my ZE620KL nothing worked, many tries, I waited a few days and it didn't work. Even changing the rom for an official Asus rom (without root) the app kept saying that the device is not safe. It only started to allow contactless payment after relocking the bootloader. I believe that in my case, gpay did not work by detecting the unlocked bootloader. Edit The device passed all tests, safenet, Google protect, basic, CTS (with root). but it still only worked after relocking the bootloader
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