Cannot add Yale Smart Lock to app

I am trying to add my Yale Smart Lock (sometimes referred to as YRD100, sometimes B1L) to the app following the instructions which involve removing the battery cover and holding a sync/broadcast button until it beeps twice. I've done this several times; however, the Ring iOS app seems stuck in the "listening for device..." state and never seems to find the lock. I've tried this several times, doing a factory reset on the lock, etc. to no avail. Has anyone experienced this issue or been successful pairing this lock with their system? Compatibility was a huge driving factor in my investment in this system and I've already had to replace existing doorbell chimes, transformers, etc. to get things working--I really don't want to spend another $150+ replacing my door lock. Any help is much appreciated, thank you!