I have same issues. Half my content dont work. Most chars is just trying to update, but no succes. Cant enter Mystic ruins, cant enter Treasure cave, cant enter daily guild run. Seems like content above dungeons lvl 5 is not working. Also most links between gear and corrosponding raid are broken. HOL, And links to forge quest
Playing on android lollipop, samsung tablet
Try a fresh install. That seems to be working for my guildies. Worked for me too. Takes a couple minutes, but eventually everything worked and I was able to do my raids, ruins, etc after that. GL man.