I am getting a 'page isn't redirecting properly' error

I backed up this website using managewp.com this morning and then was updating the plugins. I updated this one and accidently clicked to go back to the wpmu dev plugins before it has told me the plugin was reactivated (but it did say it was installed properly). Now I am getting this error when I try to load crookedlegranch.com/wp-admin (ir redirects to: http://crookedlegranch.com/wp-admin/admin.php?page=wpmudev&_error_nonce=0841ab7d31)

I tried to restore the backup through managewp and it will not work, so I uploaded it manually through ftp and there is still no change to the website.

Help :slight_smile: