Apple Pay

I’m using an Arriva M Ticket App which has my bus pass on it. They have a QR code scanner on the Bus which scans the QR code from your phone. Strangely, it keeps popping up Apple Pay which I have on my phone for payments etc. I asked them why it does this but they referred me to you. They just told me to “turn off” Apple Pay!!!. Any advice why it is doing this as I do not want to remove my payment card for Apple Pay purposes just for the sake of this Arriva M Ticket app.