Self Service App unreachable

[messing]

I have some iOS Devices which has installed the self service app but the server from the self service is unreachable. Jamf Pro Version 10.45.0-t1678116779. 

iPad Air: iOS 12.4.7

iPhone SE Gen3: 16.4.1

InstallType is Manually install over a group. The Cloud Distribution point test is successfully.

A reinstallation or completely new install of an Device aren't working.

Thanks for the help

[Malcolm]

screen time restrictions or vpn on the device?

[Malcolm]

or against the iCloud account if its a family sharing account?

[messing]

There is nothing like that on the devices

[Malcolm]

It's been a long time since I have touched our self-service distribution...

once upon. time, it used to be distributed through settings, but we moved it to managed app distribution, with a 5000 licence VPP distribution.

using the following management app config

<dict>
<key>INVITATION_STRING</key>
<string>$MOBILEDEVICEAPPINVITE</string>
<key>JSS_ID</key>
<string>$JSSID</string>
<key>SERIAL_NUMBER</key>
<string>$SERIALNUMBER</string>
<key>DEVICE_NAME</key>
<string>$DEVICENAME</string>
<key>MAC_ADDRESS</key>
<string>$MACADDRESS</string>
<key>UDID</key>
<string>$UDID</string>
     <key>JSS_URL</key>
     <string>https://mdm_url:8443/</string>
</dict>

but if it is working for others and not the ones in hand, I would look at, language settings, time settings and network settings, are set as expected.

[Malcolm]

Ive seen cases where the end user has deleted and installed it direct from the App Store. resulting in no managed app distributed config.