With the app version 19.6.3 this issue has been resolved! Be sure to update your app to the newest version and let us know if you continue to experience any problems. 
Pro tip: Turn on automatic updates for your app so that you always receive any fixes, improvements, or new releases right away!
Our team has been made aware of an issue with stores not populating in the app when tapping More → Disc golf stores. This issue only affects Android devices.
In the meantime, you can still find stores through the Courses tab. Make sure you review your View preferences to ensure that you don’t have Hide stores toggled on.
We’ll update here when this fix has been released!