Where is the free calls???

I dont know if its me who is not able to figure out the free call or if it was removed but I can no more call friends who have libon as well!! Before voip was available for free for all libon users but now I cant seem to find it :( was it remove? If not, please make it more obvious for people to use, because I sure cant figure it out!

Alomical about Libon - Calls and Recharge, v4.0.1