I've connected to the Internet through Proxy-server. When started AntiFreeze.NET shows "connection failed" message. What is this?
Yes, AntiFreeze.NET trial and some of features cannot work through proxy server. This will be fixed in further versions.
I've deleted AntiFreeze.NET folder in my profile. Program appears to become trial again and shows activation dialog. Why it happens?
That's because you shouldn't delete both config file and database. Activation status is stored there, so you've just rolled back activation. To activate again enter your activation code in activation window and activate program again.