I also have an issue with podcasts stopping after a few minutes. I have a Google Pixel running Android 9.
An update is now available in the Play store that fixes this issue.
We have enough user feedback on this now that we can conclusively say that there is a definite problem with the AC Central audio player on Android v.9 devices. Our developers have been notified and will begin working on resolving the issue. Watch for an app update, hopefully soon.
I have same problem with my Samsung 9 phone and AC Central sermons stopping about every three minutes.
Customer support service by UserEcho