Built stuff keeps resetting in my realm

I have a problem with my realm. Since the 1.13.0 update, everytime me or my friend are building something, then logging off and minutes later logging back in, everything we built is back to like we never built it. So it's gone. I pay almost 4€ a month for my realm and dont want it to reset what we built for hours. I hope it will be fixed soon. Not great paying for it when I'm not able to build anything or always resetting

Thank you.