HELP! unable to login after a fresh install

hello,

I’m new in the home assistant world. I have installed HA OS (generic x86-64)on a HP chromebox (cb1-019)
I’ve configure several stuff but my main issue is after changing my password and activating the 2FA authentification… I can’t login anymore form another computer !??

so before I spend 1h30 to erase everything and reinstall HA all over again… is there something I can do