Progress reversed

Every day the realm kicks everyone off and when we join back, it's like we time traveled back in time about 3 to 5 hours. Also, multiple people are usually online when this happens, yet to each person it only shows theirselves in the online list. It's like we aren't playing on a multiplayer realm, but rather a copy of the realm into a singleplayer world. And everyday, whether we're online or not, all of the progress is instantly reversed to the exact same time it started happening. This has happened to me and 2 of my friends, (that I know of).