Players losing their askyblock island

[promastermine]

Hey so I have my own skyblock server using the plugin "askyblock" people their islands are getting removed. they create a Island they can build on it for maybe 1 minute and then the Island will get a reset? Does someone know how to fix this?

 

[Polarbears]

It may have to do with the memory or the way data is being saved on your server. Another plugin could be effecting it or the world is not set up correctly