First off, if you have cheated, then don't come whining that you will reform your ways, you broke the rules, and so the mods have the right to ban you. If you do want help because you have not cheated, then you can try emailing. However, I'm pretty sure that he gets a huge amount of emails every day, and that he probably can't respond to all of them. Lichess has a huge amount of very helpful mods that you can contact, instead of wasting the dev's time.
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