Oh hey, didn't expect this to actually be seen by many people, let alone you guys!
There was no ticket number yet because I was mainly trying to resolve it upstream (whoever made it get into uBlock's default block list, Quad9, and probably other places) and then today when I checked your site specifically, the link in "False Positive? " (when you do a lookup for a blocked domain) just links back to itself so I couldn't open a case there either. Now that I look at the page again, with the advice in mind from a sibling comment to just email you, I now see that maybe this is supposed to go to the generic contact form and I needn't go through this domain status page. Opening the contact page now, I see that removal from blocklist is a selectable option so I'll use that :)
The ticket number I just submitted is 41905. Not that I'd want you to now apply preferential treatment, I didn't expect my post above to be seen by many people though I very much appreciate that you've reached out here. Makes me think you're actually interested in resolving this type of issue for small website operators, where the complete block without so much as a heads up felt a bit, well, like that might not get me anywhere. If the process just works as it normally should, that's good enough for me! Thanks for encouraging me to actually open a ticket!