Recently, Google and Mozilla decided to revoke any certificates created by the company StartSSL (which provides free SSL certificates). This means that any website using certificates issued by this provider can no longer encrypt pages. Unfortunately, that meant that the login functionality of Mapraider was completely broken in the latest version of Firefox and Chrome until I was able to purchase and install a certificate from another provider.
The issue is mostly resolved, but you may notice that site files loaded from the static file server do not work over SSL due to a limitation of the SSL I purchased. I'll resolve that issue as soon as I am able to, but everything should still work regardless.