[Q] Viber call issue after Lollipop update topic

When i am connected to wifi and make a viber call, it automatically disconnects after 5 seconds but when i am using my mobile data, it works fine. Viber message works good in both wifi and mobile data. My wifi connection is also strong. I started to get this problem after getting into lollipop.
Anyone facing same problem?? Please anyone has any solution??:confused::confused: