Dunce role in DRG discord, with no notification message of why

I have a dunce role in DRG discord and can't type. What's the deal with that? And how do I get un-dunced? I didn't get any notification from anyone about it.
Is that standard practice, of moderating someone and not letting them know what the deal is, or was this a breakdown in process? Just want to know if this is a permanent thing (one strike soft-ban sort of deal), or if there is a path forward for me in this community.
I read that there is a rule about avoiding the mute by leaving an re-joining results in a permanent ban, which I want to avoid obviously!