Due to a feature introduced by Apple since watchOS 10, Apple Pay may pop up when your Apple Watch is close to an NFC reader, like your Latch Device.
To address this, try keeping your Apple Watch slightly further away from the lock or let the unlocking process proceed while the Apple Wallet interface is displayed. This should help you avoid any interference.
We're closely monitoring the situation and eagerly awaiting any updates from Apple. For any questions, feel free to reach out to us at doorman@door.com.