I'm using WordPress 3.8.1. Updated four plugins yesterday. Suddenly today I can't log into the Admin part of WordPress. I either get an error message saying Page Not Found or that the page has a redirect loop (the address bar shows http://www.z1077fm.com/wp-login.php?redirect_to=http%3A%2F%2Fwww.z1077fm.com%2Fwp-admin%2F&reauth=1).
I have tried disabling all plugins, all themes, reverting to a blank .htaccess file, and still it does not work. I have tried every fix suggested as I've been Googling the issue, and nothing is working. Our hosting provider, Siteground.com, cannot seem to get it working either. They are telling me I need to hire a WordPress developer to fix it, but I don't have that option. Any ideas would be appreciated!! Thanks so much!