Music stops when messaging on viber

so before i updated to iOS 10, i can listen to my music and message on viber.

somehow after updating to iOS 10 whenever I try to message on viber while listening to music, the music stops playing. And when I slide up to play the music it shows this. P.s I updated viber last night to their latest ios 10 update as well.

i tried by turning off sounds in viber notifications but it didn't work either.