iOS, Feedly: Feeds fail to refresh with no error

[qckbrnfx]

With NNW for iOS (and a Feedly account if that matters), my feeds will often fail to refresh upon launching the app or attempting a manual refresh. No error message is displayed, and the syncing progress bar completes as normal. The issue is persistent across several days, though syncing is intermittently successful.

Deleting and re-adding the Feedly account seems to resolve the issue temporarily, but it soon recurs.