I've updated the GET to use
http://steamrep without the subdomain, I also noticed that version had a typo in the request (verssion) and fixed that.
The corrections are in the source below along with a new compiled version, it's been running on my trade server all day and seems to be working correctly.
A SR admin by the name of CanadianInvasion was kind enough to temporarily flag one of my idle accounts to test the scammer flagging functionality and all went well!
Thanks much for the original plugin, SteamRep is an awesome service to the community!