Issue with viber

Jun 30, 2014

I've been having an issue with Viber, and I'm pretty sure it's an issue with the ROM.

I have the latest, 4.7.4.

When I make, or receive a call, it works fine for about 3 seconds. After that, the other side cannot hear me.
I can still hear them fine, they just cant hear me.

Anyone else have this?
Any advice? This is a really critical bug for me

Thanks in advance