S10 will not access Napster

It used to work with the 4stream app then it stopped and just het login failure messages. Spotify and radio stations work. Amazon Music shows up but items on screen will not respond to selecting. Spoke with support and was told the issue is being worked on and new app update will fix it. No idea when the update can be expected. Anyone else having the same issue? Wondering if it’s the app or hardware. Frustrating since it used to work and the device is only a few months old.