Hello Hanababy,
Thank you for providing that information and those screenshots. It sounds like you want the Flo app to show up as a source within the Health app but it’s not showing up when you look under Privacy. Let’s help.
In this scenario, it looks like you’re looking in the correct location for available sources. If the Flo app does not show up here, there may be something within that specific app that needs to be adjusted in order for data to be shared. For more information, visit: Manage Health data on your iPhone, iPod touch or Apple Watch
We recommend reaching out directly to the developer for steps on how to proceed and get that added as a source. For instructions on contacting a developer, please visit: How to contact an app developer
We hope that helps. Take care.