In my server I made about approximately 4 months ago, we have used the same map off and on the whole time. Recently, though, some non-admins had trouble breaking blocks in a specific chunk, and now they can't open doors or even chests (there is a public shop in this chunk) and it is kind of a big problem. Does anyone know why this could happen or what I could do to fix it?
Is the chunk you're in the spawn chunk? If so, that's the reason why. For some reason, you have to be an OP in order to modify the blocks within the spawn.
Can't break blocks in a specific chunk?