Realm Resetting/Rolling back

Four times now I have attempted to complete a raid on my village but upon completion and an ingame day later the game disconnects me from the realm and upon logging the realm has rolled back and I am back to where I was before the raid. 

EDIT: I have now also discovered it is rolling my game back anytime I go to my island with my villagers, i have 20+ villagers and they all start lagging and then the realm disconnects.