A. 1. Check the app's settings for a theme or appearance option that allows you to switch between light and dark mode. 2. If there is no option in the app, try changing your iPhone's overall appearance settings by going to 'Settings' > 'Display & Brightness' and selecting 'Light'.

B. 1. If the app does not support disabling dark mode, consider providing feedback through the app's feedback feature to request this functionality.