Only default themes work

I just installed wordpress on my domain http://gadgetbuzz.ro
Everything worked fine, except that only the default templates work. I tried to install 3 different templates and I don;t get any images or styles.

Gadget buzz is not my main domain, so it is not installed directly in my public_html folder, but in “gadgets” folder. The domain was added as an addon domain from cPanel. You can also access the folder either at http://gadgetbuzz.sf-zone.net or http://sf-zone.net/gadgets (sf-zone.net is my main domain).

Any help please.