Correct. Pay as in NFC payments. Graphene is not certified and therefore cannot use Google Pay and some banking apps.
Discussion
Can you use it web based? I'm sure MFC wouldn't work, but I believe you can do web payments by logging in to your Gmail π€
NFC
Switch back to the plastic rectangles, it's a small price to pay. Eventually you'll be paying for everything with lightning anyway.
Unfortunately it is so.
It's explained here by nostr:npub1gd3h5vg6zhcuy5a46crh32m4gjkx8xugu95wwgj2jqx55sfgxxpst7cn8c
https://discuss.grapheneos.org/d/475-wallet-google-pay
No GPay/Wallet cannot be made to work on GrapheneOS and is a limitation in so far as Google Pay/Wallet requiring full SafetyNet compliance. GrapheneOS can pass BasicIntegrity but the OS cannot pass ctsProfileMatch as that would require GrapheneOS to be whitelisted by Google. Google Pay/Wallet requires both.
Before the idea of bypassing the checks is brought up, as some other OSes or Root methods might allow, please read the following: https://nitter.net/freechelmi/status/1553326311854276608#m