I've done castrum with you before and you were a perfectly fine dps in my opinion.
However, people on our server (possibly others) have a habbit of not talking much which is probably why nobody said anything before you were kicked from the group. I've been in many groups that rotate players after every run with nothing being said in between.
There have also been groups that remain static and chat away making jokes and conversation between and during runs.

Don't let it get you down.