Without seeing you roll or knowing how much you attend it's hard to say.
I know several GB schools around me have started giving out stripes based on attendance. If you attend so many classes you get a stripe.
Also tapping people doesn't really mean anything. You could be tapping people with strength and not technique. If you aren't displaying technique then it's possible that your instructor doesn't think you are learning. Therefore never base stripes or belt color on who you can tap out.