URGENT locked out of website due to www-authenticate header

Me and our team were in a hurry and having trouble creating a 100% SSL score, so we resulted to using this plugin to add security measures. According to really simple ssl they said that there was a lot of missing headers and parts for the ssl. I found the inspect headers tab that was showing the missing headers. I thought to myself these are all the essential headers you need to have good ssl score. So I started turing each one on one by one untill i ddint even notice a password and user name field for www-authenticate. I unknowlingy didn’t type any password or username, turned it on and pressed save changes. Afterwards i could acsess wordress admin dashboard at all anymore. We have ascess to the files through the server and we dont know what do do at all. Please help.

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