i updated and everytime i go to click on a raid it goes to pending and then disappears ; when it comes back awhile later it has reverted to 'wait list' again. Did not have this problem before i updated and it doesn't matter what raid i click on.....

I think that is more to do with the people running those raids. They can add and remove their premade at will then readd it later to get more group members also going offline removes it from the list as well. The only thing I can suggest is to possibly start your own group or try to choose those that are on the list longest. Those types are usually the ones that don't remove their group unless they go offline.