I’ve tried to update my apps in the App Store twice (using the Update All button) since upgrading to iOS 12.1 earlier today. Both times the app updates simply loaded for a couple seconds before showing the Update button again. Just barely tried it again (3rd time). Yup, loaded for a second and now showing the Update button again. I updated a couple apps early this morning before the 12.1 upgrade and it worked just fine. My device is iPhone 7 Plus 128GB. Anyone else having this problem?