Sorry, I don't know anything specific about your issue.

But by hovering over the red (3) on your account, I can see it's on 3 centralized blacklists: spaminators, hivewatchers, and buildawhale. Each of these groups maintains a separate list.

AFAIK you need to contact each of these groups to get removed from their blacklist.

Note also that the management of these lists has nothing to do with the proposal system (aka DHF). You need to contact the actual groups that manage those lists.