Ring hasn’t updated their list of compatible smart locks in a long time. A lot of these locks have been discontinued or are insanely marked up because they are no longer in production:
Does anyone know if the newer Z-wave Kwikset locks are compatible and just not listed on their site?
Namely the new Kwikset 620 Z-wave smart locks.
EDIT: I see many other users have the same exact question in this thread, unbelievable that Ring has not addressed this for a product that is advertised to work with Ring.