Hi! I understand your PayBox app shows a black screen on your iPhone running iOS 18.6.1. Let’s see what we can do to get this fixed together.

To start, could you tell me if this issue happens right after you open the app or does it pop up after some time? Also, have you tried any troubleshooting steps already, like restarting the app or your phone?

Meanwhile, here are a few steps that usually help resolve a black screen issue with apps on an iPhone:

1. Force Close and Reopen the App:
- Swipe up from the bottom of the screen and pause to open the app switcher.
- Find the PayBox app preview and swipe it up off the screen to close it.
- Reopen PayBox to see if it loads normally.

2. Restart Your iPhone:
- Press and hold the side button and either volume button until the slider appears.
- Slide to power off, wait 30 seconds, then press and hold the side button to turn it back on.
This often refreshes system resources and fixes temporary glitches.

3. Update the PayBox App:
- Open the App Store, tap your profile icon, and scroll to Pending Updates.
- If PayBox is listed, tap Update.

4. Check for iOS Updates:
- Go to Settings > General > Software Update.
- If there is an update available beyond 18.6.1, install it. Sometimes app issues are fixed with iOS patches.

5. Reinstall PayBox:
- Press and hold the PayBox app icon until the menu appears, then tap Remove App > Delete App.
- Reinstall it from the App Store.

If those don’t fix it, sometimes a more in-depth approach like resetting network settings or clearing app cache helps, but let’s try the above first.

Also, it’s worth noting that some users reported black screen issues with apps after updating to iOS 18, sometimes requiring a device restart or app reinstall to resolve fully1 10.

Please give these steps a try and let me know what happens. I’m here to help get it working again! Are you satisfied with this starting point?