Viber not work on WiFi

[Kralj3gs]

i have very strange problem, from 12:00 today my viber no longer works via wifi on my phone only works via celluar network.

I have never had this problem before, old belkin wifi router works perfekt ,over Netgear XR500 not works .

I did a factory reset not helping, other things work great only iptv not works as usual i turn off QoS and works fine iptv.

 

now the problem is the viber application on the phone does not work via wifi had any ideas what it could be.

 

[Netduma Alex]

There's a setting called SIP ALG which could be affecting it, this can be disabled on the router. 

[Kralj3gs]

problem solved  thnx . 😀