I also only know of this solution here
No, there is nothing else in existence for Pluggit and Home Assistant. Great to hear that Dantherm and Pluggit are mostly the same thing.
Can we do anything to help adapting your integration for Pluggit? You can have me (and most likely neotigger) for real-life, real-device tests. I also happily provide you pcapng packet captures from the Pluggit App and the Pluggit AP310 device, if needed.