So I just looked at your log, and I see lots and lots of conditioning and cardio work. Are you currently training for something running related, or no? You could be burning up too much energy here, and that's compromising your strength gains. (In which case, I would just eat more, personally)
My second thought is you're not pressing frequently enough and/or with enough volume.
But since you are following a program, by a good coach, my thought is the problem comes back to this: