@kklav
BruteProtect is now a part of Jetpack:
https://jetpack.com/support/security-features/
Are you using Jetpack Protect on your site?
If so, can you try following the steps here?
https://jetpack.com/support/security-features/#unblock
If those don’t work, please reply with the address of your site.
If you want to reply privately, you can do so here:
https://jetpack.com/contact-support/
Thank you!
I had the same problem. To resolve it, Go to your ftp > extension folder > change name from bruteprotect to brute-protect for example. Then, you can log into your website.
After that, Go to extension page of your wordpress > you will see a mistake with bruteprotect files. Go to your ftp > rename brute-protect to bruteprotect.
Then, go to extension page of your wordpress, and activate bruteprotect extension. Don’t forget to put your IP in whitelist.
I hope it will help !