Grand Mirror Bugged

So I was doing the delirium questline, and when I got to the grand mirror boss fight, I lost and died. I had to fully reset the map because the mirror was just not there.
Now I did the map again and finished, but whenever I go into the map and it tells me "Select 1 Map" it doesn't work, I can't select any map. Basically soft locked out of doing Delirium questline.
Any help would be appreciated thank you.