other end low sound in viber

hi there, i,m experiencing peculiar type of problem in my redmi 3 pro. while making a viber call, the other end always complain about low sound, even they have full ear piece vplume on their's. But, its fine with other apps link messenger and imo. Its fine with regular gsm call as well. Is that due to low mic gain for internet calls? if it was the case, then messenger and imo should also have the same problem. i'm just confused.

Viber 6.0 beta appx

Wondering if someone had a copy of the first viber 6.0 beta appx released on windows 10 mobile. The first version had audio/video settings menu which was removed in later versions but this menu is needed as the shortcuts they put in the app for loud speaker/bluetooth do not work at all. I could switch to the different audio devices using the menu but not while in call.
And before i get asked no version of the app has worked for me in terms of the button shortcuts on any version of W10 mobile both stable builds and redstone insider builds. also its not my hardware on microsoft lumia 950xl and the bluetooth headphones work in the app when i had the menu and sometimes on the later versions would switch to bluetooth devices but couldnt switch back to headset or loud speaker.
Also note the loudspeaker option never worked in call without switching devices in the menu as if I was on a regular pc.

Viber problems

Does anyone else have viber problems? I dont receive any notification from viber, i can see my messages only when i go to app and it all started when i updated to m, b560. I tried all "normal" ways to fix that but for now without luck. Can anyone help me with that, its pretty anoying, im not using it too much but it still boders me[emoji20]

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