Apps on iPhone Not Updating Properly iPhone 7 Plus with iOS 10.3.1

I had three apps that were experiencing issues with updating.

Symptoms:

• I went into the App Store to see if any apps needed updating. Several were listed. I touched "Update All" and all of the listed apps appeared to update.

• Upon returning to my Home Screen, I noted blue dots next to the apps that had updated. I opened each app and the blue dots went away. 

• I returned to the App Store later and found that three of the previously updated apps required updating. I was not sure if this was an additional, more recent update. I touched "Update All" again, and all three apps appeared to update again.

• Once again, I returned to the Home Screen and found blue dots next to the applications noting their updated status. 

• Curious as to what was occurring, I immediately returned to the App Store. The same three apps needed updating. By checking the updated dates, I determined these were not new updates. They were the same update I had already installed. 

Troubleshooting:

• I uninstalled all three apps. Restarted my iPhone. Then reinstalled the apps. The problem described above persisted despite the apps being reinstalled.

• I went to the App Store and cleared the cache by tapping the bottom navigation bar 10 times. The screen flashed white to indicate the cache clearing. I returned to the Updates tab and determined the problem above persisted.

• I did a two-button hard restart on the phone. On the iPhone 7 Plus, this is done by holding down the power button and the volume-down button until the Apple Logo appears, then release. Upon returning to the App Store, I determined the problem persisted. All three apps were still listed as requiring updates. 

• I restored the phone from a backup on my computer. I went through many of the steps listed above, including clearing the App Store cache, after the restore. The problem persisted.
SOLUTION:

I went into Settings > iTunes &amp; App Store and SIGNED OUT of the App Store. I restarted my phone. I went back into Settings and logged back in to iTunes &amp; App Store. Upon checking the App Store for updates, the problem has been resolved.