betnomi scam, unfair, or whatever.

i participated in predictor events and then a few times i was in the last top 40 i received a free bet prize and it went so well that i did roll or bet a few times but unfortunately, i lost all of them before the withdrawal.

again, i win by being in the top 40 and then i place the bets or rolls according to the conditions until i win. furthermore, i thought to immediately make a withdrawal before everything was lost as before but what happened was my withdrawal was rejected on the grounds that i was misusing the predictor program.
i was just accused without any real evidence from the admin and the funny thing is, the admin called me "nagatobi" in the last chat and it was funny because i didn't know who was "nagatobi" he meant.

if i was detected abusing the predictor event from the start, i still wonder, why the organizers still allow me to participate and keep giving me the prize (free bet)?
what does that mean?
until i just found out when i tried to make a withdrawal and it was rejected without any real reason and evidence.