Fixing cmucl-announce list

I'm trying to move over (finally!) the cmucl lists from cons.org to c-l.net. I've updated the subscriber lists to match, but when I tried to do the same for cmucl-announce by visiting the admin page to add subscribers, I get a page not found at https://mailman3.common-lisp.net/postorius/lists/cmucl-help.common-lisp.net/ Can someone fix that for me? ​