I get the problem trying a verticle passing game going. Your receivers can't get quick separation and the line is too injured to buy time so those play calls end in a checkdown or sack.
You also have a RB leading the leage in YPC which can lead to tunnelling into him a little too much making the plays predictable.
Basically the Ravens have 2 playcalls, run up middle or 5-10 yard pass. When the run up the middle gets stuffed you need to hit BOTH 5 yard passes to get 1st down. When they don't, failiure happens.