"Works With Ring" Zwave Devices no longer sync to Alexa

I have a number of Leviton Z-wave switches that appear on the "Works with Ring" list. I've been gradually adding them throughout my house for some time now, and historically whenever I'd add a switch to the Ring app, it would automatically be added to the Alexa app, almost instantly. I recently added a new switch (same model as my others) and this one has not been discovered by the Alexa app. I have also been unable to manually add it through Discover my Devices. The switch can still be controlled through the Ring app, but this adds limited utility as voice commands, room groupons, etc cannot be used. It would appear there is some issue between Ring and Alexa where new devices are no longer syncing properly.