Hellow

One of my eap got broke its antennas after hited by fallen iron pipe.  I tried replace with tp link N300 antennas but seem not work perfect to reach my targeted spot blind as previous.  AM planning of using replacement antenna of 11db spec or Yagi type antenna of about 21db.  Though these are directional but its not a big challenge

My question is based on: will eap work normally or because it made with consideration of 5db antenna then replace with above db will ruin its functionality? ?