Hi there! I see you're having trouble with the PAJ Portal v2 app opening to a blank screen on your iPhone. Let me help you get this sorted out.

To start off, could you tell me:
- Which iPhone model and iOS version you are using?
- Have you tried any steps already, like restarting the app or the phone?
- Is this issue happening every time you open the app, or just sometimes?

In the meantime, here’s a good step-by-step approach we can try for the blank screen issue on iPhone apps:

1. Force close the app: Swipe up from the bottom of your iPhone screen and pause in the middle to bring up the app switcher. Find the PAJ Portal app and swipe it up to close it completely.

2. Restart your iPhone: Hold the side button and either volume button, then slide to power off. Turn it back on and try reopening the app.

3. Check for app updates: Open the App Store, tap your profile icon, and scroll to see if PAJ Portal has an update available. Install if there is one.

4. Reinstall the app: If the issue persists, try deleting the PAJ Portal app from your iPhone and reinstalling it from the App Store.

5. Check network connection: A weak or unstable internet connection can cause loading issues. Try switching between Wi-Fi and cellular data.

If none of these work, sometimes it helps to clear cache or reset any app-specific settings, but this varies by app design.

Please try these out and let me know how it goes or if you need guidance on any step. Also, if the blank screen is related to a login prompt or loading your account data, that detail would be helpful to know too.

Looking forward to your update!