Try if a local caching server can be of use. One Mac mini for testing,
and test if Jamf Teacher lets through information better. Worst
case(caching makes no difference) you can repurpose the Mac mini for
music, arts or similar later. Network check li...
Do you have a Home Screen layout? This should set the location for apps
you have configured in the profile, and stop the edit option for Home
Screen layout.
But they show up in ASM and is assigned to an MDM? Apple Configurator
can be used to add a device in ASM/ADE. But if you log back in with
Apple Configurator for Mac, you can take over VPP or ADE tokens. This
may make your ADE workflow fail between AS...
Do you see the device serials listed in the ADE profile in Jamf School?
ADE profiles in ASM is one thing, but they only sync once a day usually
unless manually triggered('Sync now' in the Dashboard does this). I
would consider to renew the ADE token ...
You should download the file to your computer, and then upload to Jamf
Pro in one of the supported formats. If you have a Google Drive setup
already, this distribution replaces that and puts the file in Self
Service.