The game doesn’t save

when I play miniblox, I hold one of the most played severs ever and the players are very happy. but sometimes I think its because too much players are playing so that my game doesnt save, what do I mean? I mean that when I get on my sever I always lose my infernium helmet so that mean I have to type commands over and over again to just get my infernium helmet back. I asked ai what should I do and it suggested me to type /save force , at first I thought it was working but right when I logged of, my proggress gets deleted again. I think you should add a proggram that can save everyones proggress no matter what.