The initial hiccups with Federation seem to be resolved with 0.19.1-rc.1. Since I also managed to test the new Version of the Mestionora Bot (it should now actually post Part 2 and Part 3 Manga discussions in parallel instead of only Part 3, hooray) I will update the instance after PrePub discussions die down a bit.
Expected Timeframe is Wednesday 16:00 UTC - Wednesday 18:00 UTC.
During the Update changes to the expected downtime can be checked on status.bookwormstory.social.
If anyone has any questions please feel free to ask away.
Additional Information on what 0.19 changes and how that might affect you as a User can be found here