Same thing for me this morning. Yesterday I flew two segments, had Uber miles post, and Amex miles credit. Looking at the total available this morning (on the app) seemed a bit low. Tried the usual pull to refresh, close out of the app, etc. Nothing worked to update it. I even did the reverse math and confirmed the total was incorrect. Logged into the full website and the total displaying there IS correct.

To further test this, I remembered that I had not completed a bags on time claim (2500 miles) from yesterday, so filled out the form online. Sure enough the miles posted instantly and appear in history on both the app and full website, but the totals on the app continue to stay the same, while the website updated. Will monitor to make sure it eventually syncs. Currently at around an 8K difference in totals.

This is similiar to this issue we all had a few months back where the DL app was not updating itinerary info in real time and recent reservation changes, seats, etc were not syncing for hours after the fact.

UPDATE: Checked again this afternoon and looks like the app is finally showing the correct number and matches the full website. Took about 5 hours from my last transaction for things to sync up.