I already finished lesson 1 but lesson 2 isn't unlocked .why ?
Are you behind a proxy or have an otherwise non-standard internet connection (such as satellite)?
Yes I'm using a proxy server for reaching this website . What should I do ?
I closed the proxy server and I was able to finish the lesson . It's hard for me to use this without proxy (because of low internet speed) , but thanks for the help though :) This is the greatest thing ever !