Delete account seems to only inactivate the account

I wanted to reset all the lingqs, as I did not find a way, how to delete them. I am not even sure that I understand what these lingqs are. Anyway, I deleted my account to restart again, but now the system says that I can’t login using my google account, because my account was only inactivated but not deleted

Funny thing, why can I still post here although my account is inactivated?

Looks like instead of just resetting a language (which can be done under Settings > Languages), you deleted your account completely.
You will need to register again and start over.