So you’re not going to like reading what I’m going to say, so brace yourself.
This sounds like an admin land claim wipe. It is presented by your buildings disappearing and “lost stability” in logs. Anything touching the main build is deleted, all placeables or outer buildings not part of the main will stay as well as all thralls, mounts and animals placed.
The way you can verify this is by attempting to login after server reset, if it shows you a message that you’re suspended it will tell you the reason and for how long or, if the reason was serious enough or so many suspensions have already happened, banned.
There are 2 possible causes: you were reported or you were caught in the crossfire of another report.
You can review the Terms of Conduct here and the accompanying post for clarification regarding building techniques and behaviours to avoid. Read them fully if you have not already so you can get informed.
Cross reference it with the message if you do not have access upon server reset.
Although unlikely, sending a message through Zendesk if you were suspended/banned and asking politely why might give you better context on the situation. I wouldn’t hold my breath on that, they haven’t given explanations since 2021.
if you’d like a history about this there’s plenty of reading dating back from fall of 2021 on the forums.
Hopefully I am wrong but I doubt it, sorry.