Nextcloud - Brutce force login - Account locked out

I was able to get rid of the error message by deleting the content of the table oc_bruteforce_attempts on nextcloud database.

DELETE FROM nextcloud.oc_bruteforce_attempts

You can put a where clause and limit it by IP so that only your login attempts are deleted:

DELETE FROM nextcloud.oc_bruteforce_attempts WHERE ip ="X.X.X.X";