Can't Login to WordPress Admin Panel After Changing URL

Hello,

Today, I changed our URL from https://www.formula1autocare.com/index to https://www.formulaautocare.com within the settings twice (the wordpress URL box and the other box directly under it, I believe “site/domain URL”).

We purchased a formulaautocare.com Domain, but I didn’t realize I would have to transfer the info over to a new WordPress panel. I hastily read a post in the support forums, and changed the URL within the settings. Once I did it, I was hit with a page unavailable error, and now I can’t seem to even reach the login screen with:

formula1autocare.com/index/wp-admin
formulaautocare.com/index/wp-admin
formula1autocare.com/wp-admin
formulaautocare.com/wp-admin

With each URL my Chrome browser says “waiting for formulaautocare.com” then gives me the same page unavailable error.

If you’re wondering, for some reason the “/index” is in the default URL, the person who developed the site before I was hired apparently set it up that way.

But either way, the wordpress admin panel is inaccessible. I’m trying to figure out a way to log back in, download the info I need, and transfer that to a new panel or whatever I need to do.

EDIT: We use GoDaddy For Hosting, if that’s relevant.