Posts of mine are gone too, on Hive too but I blame it on the fact both sites plus the apps are frequently unreachable (I know because I try to post nearly nonstop from 7 am till 8 pm) and at times I see what is posted show up hours or a day later and it's there or even twice or triple. 🥴 So for now I blame it on the servers, changes and dapps, me and who knows even the connection.