Before someone will ask, I saw a lot of posts about Google Wallet/Pay and OneUI beta. but the thing is, I'm not using beta. I updated my phone when I saw a security update. day after, I saw the message that Tap To Pay doesn't work because security requirements.
I did some digging and apparently, something was bad with my firmware. I downloaded Play Integrity API Checker and saw that there were problems.
In the end, I flashed in Odin another firmware. downloaded from Frija Tool and it changed the CSC and solved the problem without breaking the Knox or something like that.
I don't know exactly what was the problem with the security update or my phone, but apparently, someone changed the firmware before I bought the phone.
If you having this problem, I can send you a link to a Reddit post.
If allowed, I send it here and mark this as a solution.
