[Mcdonald's Ice cream machines]

If you don't use it, you don't have to clean it XD

[McMMO needs updating again :(]

If you run Server on Spigot, you should switch to Paper.

I had the same problem. No change I did worked. then I switched from Spigot to paper and then it worked.
But something seems to be not right. The Stats sometimes resets itself. Thats annoying