I will describe my solution to the NFC problem in my Xiaomi 14 Ultra 16/512 CN with firmware from xiaomi,eu 1.0.8.0.UNACNXM is not the latest firmware for this phone at the time of writing this post.
Initially, I had a problem like in the screenshot. Something with root and so on, see the screenshot "error gPAY". I was advised to upgrade to the latest firmware version and install XiaomiEUModule (I didn't do that).
What did I do:
1. I performed an NFC reset (probably all more or less new smartphones from xiaomi have? see the screenshot "NFC restore").
2. I tried linking the card to Google play again. This time there was already another error (I apologize for the screenshot "new error", but there was only one for Google technical support, more on that below).
This error, as I understand it, is associated with many attempts to link the card, and may also be related to changing the address that is specified for the card when registering with GPay, may even be related to replacing the SIM card.
3. There are several solutions to this problem:
1. You wait 24-72 hours and try to link the card again.
2. Write to Google support. I chose the 2nd option. It took about 12 hours, and they emailed me that they see my problem and asked me to try to link the card again within 25 hours.
It worked! The card is linked to Google Pay.
p.s. Of course, I can't guarantee that this will help everyone.
For myself, I'm still trying to solve the last issue related to my phone. It was bought from tradingshenzhen, why don't the over-the-air OTA updates work for me screenshot "otatwrp".
Perhaps some of you know?