Hi Fillip H.,
I have inspected the errors.log file and only see: [Thu Oct 23 10:22:46 2014] [error] [client 105.236.251.234] File does not exist: /home/flytalkv/public_html/500.shtml, referer: Log in - Flytalk Reviews - vBulletin Admin Control Panel
What does that mean? My host doesn't want to...