hi guys! my Macbook pro 13 m1 power off button was broken and I changed it now after this I am unable to pay with Apple Pay online what should I do ?

If you installed another TouchID button yourself without doing it through the recently announced Self Repair Program, then you will lose fingerprint recognition and it just becomes a simple power button. Apple pairs parts of the 2018+ Macs which requires utilizing a special System Configuration utility to pair parts to the Logic Board. This can only be done through official repairs performed by Apple, an Apple Authorized Service Provider, or through the new Apple Self Repair Program if you laptop is one of the models supported by this new Self Repair Program.