Request to remove ban to be able to appear on leaderboards

More than a year ago while playing I received a suspension for alleged botting for 15 days, I had been playing for 3 almost 4 years and I never did anything that violated Ubisoft’s rules, at that time I didn’t take it seriously because it was only 15 days and Ubisoft told me that nothing could be done because it was an “automated system”, so I just decided to wait; however, now that I finally reached a high elo in the game I wanted to appear in the leaderboards, what do I need to do to get that unfair ban deleted.