nfc alarm.com nfc reader on iphone not working with alarm.com keypad with NFC reader

We recently replaced a hand-scanning entry system with a system that scans NFC from your phone.

I cannot get the NFC portion to work. I know it does work with smartphones, as several Samsung galaxy users are using it without issue. I have done everything I know to try. Is there a trick to getting an iPhone 13 pro max to work with this device? One time I scanned it, and apple pay opened. So it seems like something is awry at a level I cannot access.