Hey call521,
We are unable to make any changes to your account here on the forums, including investigating or changing a ban. The only team able to review a ban or remove it from the account would be our Terms of Service team, via an appeal.
If you have already completed multiple reviews and the ToS team declined to remove a penalty, I'm afraid that would be final and cannot be changed through any other channels either.
As far as the keybinds, you may be able to retrieve them if you're still using the same PC and Windows login as before. You should be able to check C:\Users\USERNAME\Saved Games\Respawn\Apex\local and copy the settings.cfg file to make sure the keybinds are saved. If you're using the same Windows profile and PC, those should appear automatically, but you may wish to copy that file first just to be sure.