Realm is trapped in a state of permanently constantly reverting

Our Bedrock Realm constantly reverts to a specific point in time over and over again, every single time we log out. (Once we've been logged out for a few minutes.) It is impossible to make any permanent changes to our world because everything goes back to a specific moment once we log out. This makes the Realm entirely useless, as nothing can ever happen. This is unacceptable for a paid service.

The Realm is paid for via the Android mobile version, in the app store. I also use it on Switch, and one member uses Windows 10.