if for some reason they don’t come back, there was a small update a few days ago (2.0.11.2) that your repo doesn’t have. If that’s needed, the source tarball can be found on f-droid: https://f-droid.org/packages/com.github.catfriend1.syncthingfork/#latest
FWIW I had a look over the diff, and there’s nothing suspect between 2.0.11.1 and 2.0.11.2. So if it happens to be a situation of their account being compromised, it doesn’t look like anything malicious was added in this final release.