World #3 On Realms Inaccessible

       I own Minecraft realms and for about 2 or more months I haven't been able to access or use the third world on the realm. This is extremely frustrating as I can only use 2 worlds and the world I have uploaded to World 3 is inaccessible. Is this a problem many people have?

       Either way I would like to know if there is a fix for this.