Maybe that's the reason why Travian blocked VilloFetch!
Maybe also for the (useless) banners.
The main purpose of VilloFetch is to bring you the Travian site exactly as it is when seen directly, with the exception of the added control panel (I now removed all banners).
If this doesn't happen, it's a bug and you should let me know somehow.
Also the "FoolYourBoss" feature is intended to bring you the exact functionality of the original site, but with a different look.
VilloFetch only has a check to prevent you from going to non-travian sites. That is to keep traffic low and give a better experience to Travian players: if anybody could go anywhere, the server wouldn't cope and everything would get slow.