Hi there! I see you're having trouble with the DarkHeart app asking for three pictures but it's not working on your iPad and iPhone. To help you better, could you clarify a couple of things for me?

1. When you say "not working," what exactly happens? For example, does the app freeze, show an error message, or do the photos not upload or display properly?
2. Have you granted the DarkHeart app permission to access your photos on both devices?
3. Are you running the latest version of iOS on your iPhone and iPad, and is your app updated?

Meanwhile, a common issue with apps not working properly when selecting photos on iOS devices is permission access to the Photos library. Here's a step-by-step guide to check and fix this:

1. Check Photo Access Permission:
- On your iPhone/iPad, open Settings.
- Scroll down and tap DarkHeart (the app).
- Tap Photos.
- Make sure it is set to either Selected Photos (with the required pictures selected) or All Photos to give full access.

2. Restart the Devices: Sometimes simply restarting your iPhone and iPad can solve app glitches.

3. Reinstall the App:
- Delete the DarkHeart app from both devices.
- Go to the App Store and download it again to ensure you have the latest version.

4. Ensure iOS is Updated:
- Go to Settings > General > Software Update and install any available updates.

5. Try Selecting Photos Again after all above steps.

If you still have issues, it might be related to how the app interacts with your photo library or a bug in the app. Let me know what happens after trying this, and if you see any specific errors! I’m here to help you through it.

Are you able to check the app permissions for Photos access first?