Ello, i'm the mod that banned you.

First of all, i did warn you about chat violations, and secondly, the rule about pmc is as follows

Planet Minecraft - Do not come on the server saying you’re from Planet Minecraft and you’re here to review the server. Whatever happens to you is justified.

I first scimmed it and saw the Planet MC rule.

You read the rule and purposely broke it

You will be pardoned in 24 hours