Hi there! I see you're having some trouble with your app not updating today. Let's see if we can get that sorted out together.

Could you confirm which app you're referring to, and whether you've checked your internet connection? It’s also useful to know if there were any recent updates or changes made to your device or the app itself.

While you're answering that, here are a few steps we can try to potentially fix the issue:

1. Check Internet Connection: Ensure that you're connected to Wi-Fi or cellular data. Sometimes a weak connection can prevent apps from updating properly.

2. Force Close the App: If you haven't done this already, swipe up from the bottom of the screen (or double-click the Home button) and swipe the app off the screen to close it completely.

3. Reopen the App: After force closing, open the app again to see if it updates automatically.

4. Check for App Updates: Go to the App Store, tap on your profile picture at the top right corner, and scroll down to see if there are any updates available for the app.

5. Restart Your iPhone: Sometimes, a simple restart can help clear up minor glitches. Hold down the power button and slide to power off, then turn it back on.

After trying these steps, let me know how it goes! If the issue persists, we can delve deeper into it.