I received an app update through the App Lounge 1-2 hours ago, and upon just trying it again, I am receiving another app update (VLC 3.6.3, by the way) through the App Lounge on my Fairphone 3+ running 2.7-u-community.
I too received updates through App Lounge moments ago and checked the app for functionality, nothing to report. Maybe there is a problem with your wifi or some interfering app?