IP Specific Launcher login? "Play the demo"

Whenever i try to login using the launcher with account TomLV from my personal PC it shows button "Play", although if I try to login from a different computer it shows "Play The Demo". I also just noticed that I can't view my skin through skin viewing sites, because it returns 0 results. I'm pretty much confused right now.
Besides my primary account doesn't have such problems o.O which is HawK3yLV.