My Directv Stream app keeps not loading and I have to uninstall and reinstall. It’s worked fine for Months. Everything is updated. This is happening on Roku TV and stick. A couple of times it has even shut down and erases the app mid-stream.
After removing a channel, best practice is to clear the Roku's memory by restarting it before reinstalling the channel. Without the restart you may not get a clean reinstall.
So the process is:
You'll find the System restart option under Settings > System > Power on some models, or if not there under Settings > System ... or just unplug from its power source for a few seconds then plug back in.