[Help] What's with all the achievements on smp5?

Hello Empire. For as long as I can remember, I always get an achievement when logging on to smp5, such as "Diamonds!" when I don't even have diamonds in my inventory and the same with the "Getting Wood" achievement.

It's really annoying, and I'm wondering if there's anything I can do. This is only when I connect to smp5 (other servers are fine).

I get that too but on SMP3, the same Diamonds achievement without having any Diamonds!