I am new to HAM radio and am trying to make as many contacts as possible. It seems that more than half of the time when I request a confirmation it is rejected. I don't see where there is an explanation and I don't know what I am doing wrong. Any help would be appreciated.
All of your information (date, time (GMT) band and mode must match what the other guy has logged. Try contacting via email one of the people who rejected the confirmation and see what the problem was and maybe it will apply to others.
BTW, if you log all of your contacts then confirmations (correct ones) happen automatically. No need to request confirmations.