Look i would "revamp" my base if i could. Today i joined to see if it was the server as @EPICfighters said and this happened: https://imgur.com/a/7KH0BMB
After the server restart i started talking to a player from the server that was asking about those "ghost blocks" and i told him it could be my base and that i was gonna try joining back when TPS were stable, as soon as i joined tps dropped to 12, no one could open chests or doors, etc. i also went to spawn and everything was working again https://imgur.com/a/7KH0BMB . it's most definitely my chunks. PS: i won't join the game again until this is fixed or solved, thanks for the help btw