Now that SLGA appears to be broken as well, I’m starting to use Aurmur (Aurmur.com). It has most of the critical functionality I need for sending codes for Airbnb and Vrbo listings, and integrates with OwnerRez (the PMS that I plan to switch to).
Their API interface to SmartThings seems to be working while SLGA is not.
I’ve communicated with the founder and understand that while they see a shift to more low-energy-wifi controlled systems, they “plan to continue support for existing locks indefinitely.”