My world dissapeared

I played on the mineplex server. Theres a dedicated server in the mineplex cityhub for house building. I built a house. I literally worked for hours to finish that house and now its gone. At 5 pm i was working on it (on version 1.14.60) i saved it and logged out, now its almost midnight (after i updated to 1.16.0) and i wanted to check it and its just not there. I was dissapointed and angered at the same time.