Circumcised or Uncircumcised?

I apparently cannot suck this mans dick in the style that gets me excited as well as him. I can't create suction on the tip like a lollipop(as I like to do) he says not even to touch the tip cause it's too sensitive or it hurts????? What I'm supposed to do? I thought with these types of penis's you were supposed to pull the skin back and that was that?? FYI he is the first I've ever seen with this type. Thank you in advance for your help I'm anon bc some of you can be really harsh and I feel stupid for not knowing what to do with this thing! Also which do you ladies prefer?