Music problem

The app is absolutely lovely, I have a pro and would rate it not 5, but 10 if I could, if it werent for a problem with music. I have already tried reinstalling, created several locally stored playlists and chose built-in player, but all the same as soon as I start a mission, theres no music, only the story. Theres no problem playing with the external option, in any case. Could you help with that?

runemarks about ZRX: Zombies Run + Marvel Move, v5.0.3