Apple store not updating apps
Meanwhile on Mac OS, the Mac App Store can be refreshed via a keyboard shortcut that has remained the same since the introduction of the App Store on the Mac.
Keep in mind that prior versions of i OS App Store used either a series of quirky tricks, or a repeated tap of the Updates tab trick to refresh the App Store, so ultimately the change with the latest versions of i OS 11 are a notable improvement.
Learn how to optimize for Dark Mode, then test your apps on a device running the latest beta version of i OS 13 or i Pad OS.
If you need more time to make your apps look fantastic in Dark Mode, or if Dark Mode is not suited for your app, you can learn how to opt out.
Apple will fix the issue, and the service will be available again.
You can also contact Apple or visit one of their stores. I did find that the App Store sometimes starts working again if is sign out of the App Store, do a hard reset, and then sign back in to the App Store once my phone has rebooted.