Players get repeatedly "kicked by ..." when on realm.

For some reason when I play with my friends on my realm it kicks me and everyone out of the world it says “you have bin kicked by Minecraft moderators” so I don’t know what to do I tried so hard to make sure it works but every time “you have bin kicked by Minecraft moderators” like I can play for like an hour or so but then it kicks everyone and it won’t let any other people join the worlds