I have downloaded Zoiper app for my iphone and it doesn't work. After I login when I try to make a call the app automatically stops working but I can see on my notifications that the minutes are counting and it says "ongoing call" on and when I try to "hang up" (on the notifications little box) it just doesnt respond. The other person gets the call but I can not hear anything and my app doesnt work nor respond). In order to stop seeing the "ongoing call" message I have to restart my phone.
Could you please help me to solve this problem? Thank you.