Unfortunate it to see it go down, but I prefer this one over the original:
https://github.com/Catfriend1/syncthing-android/releases
Check it out if you still need it on your android device.
The dev also dropped from the playstore over their practices, but builds are still up on their repo.
I’m sure there are better options, but I’m running proxmox as my host and a windows server VM for my suite.