Hey there! I'm sorry to hear that the My Mixtapez app is having trouble staying open on your iPhone. Let’s see if we can get this sorted out together.

First, can you tell me if you’ve tried any troubleshooting steps already? For example, have you closed the app completely and then reopened it, or possibly restarted your iPhone?

Here are some steps we can try:

1. Force Close the App:
- Double-click the Home button or swipe up from the bottom of your screen to open the app switcher.
- Find the My Mixtapez app and swipe it up to close it completely.
- Restart the app and see if it stays open.

2. Restart Your iPhone:
- Hold down the Power button until the slider appears. Slide it to turn off your device.
- Wait a few moments, then turn your iPhone back on.

3. Check for Updates:
- Go to your App Store, tap on your profile icon at the top right, and scroll down to see if there’s an update available for My Mixtapez.
- If there is, tap 'Update'.

4. Reinstall the App:
- Press and hold the My Mixtapez app icon until it jiggles and tap the 'X' to delete it.
- Go to the App Store, search for My Mixtapez, and reinstall it.

If you’ve tried any of these already, just let me know, and we can dive deeper into the issue! Are you satisfied with the solution I provided so far, or should we continue troubleshooting?