App does not support user preferences
Applications MUST permit user preferences from platform settings for color, contrast, font type, font size, and focus cursor. EXCEPTION: Applications that are designed to be isolated from their underlying platform software, including Web applications.
Some people need to modify the visual appearance of content on a mobile device or other platform that supports software or applications. Often this is due to low vision or reading disabilities. Software and applications must follow those preferences in their user interface.
Fix this issue by ensuring that user preferences that can be set in the platform settings (color, contrast, font type, font size, and focus cursor) are reflected in the app. Note: the preferences supported differ from platform to platform. Only platform supported preferences must be reflected in the content.