Renamed LJ account; crossposting broken

[kaberett]

I've renamed my LJ account; crossposts now (predictably :-) ) don't work. As far as I can tell, the correct thing to do is manually replace my (single) cross-post account. The FAQ says: You may delete your target journal from the crossposter at any time and reconfigure the crossposter to crosspost to a different journal.

I don't see any way to do this under Account Settings --> Other Sites. Advice, please?

(Relatedly - I note that many people on my flist who are crossposting avoid having the "Crossposts to:" footer on their DW posts. Again, I can't see any way to remove this; is this because I'm a free user, or am I overlooking something important?)