Anyone willing to help me at Vicar?
Cathedral Ward seems borked for coop, at least for me. First time I went through the area I couldn't use the Beckoning Bell at all. Then I got wrecked by the boss and as I got closer to the boss a second time, suddenly it allowed me to use it, but I've been standing around the fog boss gate for a good 15 minutes now and no sign of anyone.
This article seems to agree - http://www.vg247.com/2015/03/25/bloodborne-cant-summon-vicar-amelia-bell-greyed-out/