i mentored a player and after he leveled up he could not rate me he tried 3times then we both relogged still didn't work, and he was defintely my student the '....is now you'r student' did come up

Was this student of yours an alt of a player that had already given out five (three? I can't remember) mentor points to other members?

it's three an it tells you before you can accept the mentor thingy like /mentor invite breazle tells you then that you can't