I'm a bit of a newbie when it comes to paying with your phone, having a Xiaomi note 5 (no NFC) for the last couple of years and Microsoft Lumia 950 before ( never managed to get contactless payments working).
I do most of my shopping at Aldi and Morrisons (17:20pm when they reduce down).
I've just configured Google pay on my new Xiaomi 9t but when I installed the Amex app it gave me the option to make it the default payment method for NFC.
I've looked at the terms on Amex about rewards via Google pay but they seem a bit contradictory.
Does anybody know if you get the rewards if you pay via Google pay?