Problem with a character on the mobile app

Whenever I go to the mobile wow app on my dk for the bfa expansion on the app it keep telling me that there is one quest complete but when i click on the quest to try to complete it it doesn’t do nothing at all so the quest never completes and its the same quest over & over that is having this problem and then when i go to the recruit horde troops and then when i click on recruit because its the same troop thats missing which is the last one all that happens is its like loading thing on the last troop. Its really weird how its only on my dk that it seems to happen all the same. I uninstalled and reinstalled the app and it didn’t fix the problem. Anybody else having this problem ?