A. 1. Check your iPhone's brightness settings by going to Settings > Display & Brightness. Adjust the brightness slider to a comfortable level. 2. Disable 'Auto-Brightness' by going to Settings > Accessibility > Display & Text Size and toggle off 'Auto-Brightness'. 3. Restart the app to see if the issue persists.

B. If the problem continues, consider adjusting the screen brightness manually each time you open the app until a fix is provided in an update.