Newest apps not allowing users to skip around in audio

We released an update of our app last week. Some users are saying that they cannot skip forward or back in the audio, also if you tap on a verse in the middle of a chapter and press play it starts from the beginning of the chapter.
This did not happen in previous versions.
It works fine on my newer Android phone, but when I tried it on an older one (S7 on Android 7.1.2) I found the same problem.
iOS Simulator and PWA also work fine.
The app was made on SAB 8.6 on a Mac.
Any suggestions?