Constant Quest Bugging?

Brand new player to Everlook here. Ive been having fun until this morning when i had several quests bug out in a row. Had quest objectives not registering, had quest objectives giving me credit for the wrong thing( killed one of the cannoneers in the Guns of Northwatch quest and it gives me credit for the captian, but then i cant get credit for the cannonneer)

Is this a Questie issue or a server issue? I trtied it with both questie off and on and no help. I have has a similar bug witrh a total of 4 quests now. p

Can anyone advise?

I did this quest without any problem. I think you need to download new client and carefully put addons on it