A couple of managed iPads have stopped checking in to Hexnode. The portal shows the last check-in as a long time ago, and actions like Scan Device or app updates stay pending.
The devices are online and can browse the internet. In the Hexnode UEM app, tapping Sync shows a green “Synced Successful” message, but the portal still does not update. Restarting the iPads, switching Wi-Fi, confirming automatic date/time, and checking that the MDM profile is still trusted did not fix it. The APNs certificate in Hexnode is also valid.
What else could cause iPads to look connected locally but not receive Hexnode commands?