Login failure with Tor Browser: Error loading content, try again.

Hi,

I'll try to rejoin on this site (http://www.l2amerika.com/#!/vote/vote), but i can't log in anymore there. I get this message from the site "Error loading content, try again."

IMAGE: https://postimg.org/image/xvsz53sxz/

Trac:
Username: CodyRo