keeps unclaiming

[tapething]

I claim a land inside my base and someone broke it and I didn't give any permission to anyone so I don't know why it keeps unclaiming even I checked if it was claimed but it wasn't? what is happening?

 

[Minecraft_leg]

Are you absolutely sure you claimed it right? because sometimes when I try to claim it just doesn't seem to work, you'll have to try it a few times for it to work.

 

[tapething]

yes it says to use /trust for your friends and there was a rectangle around the claim