You need to seriously learn some basic mechanics for your classes. I don't think i saw a single bubble/heal or divine shield anywhere in this video. Also i noticed that once health bars go down they continue to. There is no stopping attacking for anything to heal whatsoever. Also your paladins go off in random directions sometimes. And do not focus on a particular target at times unless they ALL run at them from the start and they are cornered in a room. IIRC you only ever WON when people turtled and attempted to take the damage.

Just a few things i noticed.