I have actively used the Meraki System Manager Free for <100 users service for many years to manage my family mobile Apple devices. I supervise my kids Apple devices and I actively will enforce restrictions on their device when needed. I used to be able to set their devices to "single app" mode if I needed to from the Meraki Mobile app on my Iphone, however with the update of this app to version 4, that option is now not available AND I am not able to manage any feature of any device in System Manager and all devices show as offline. However all features are functional and all clients show as online when I log in to System Manager from a browser.
I have reinstalled the app on my Iphone with no improvement. I have a test device I use to test profiles and silent app installation and I have removed it from System Manger, recovery mode re-imaged it, re-supervised it and added it to my System Manager with no improvement. All the Apple devices can support IOS 14.0.1, to which they have already upgraded.
This is a problem. I am willing to test whatever I can to fix this issue. I really don't want to move to Jamf or another MDM/MMD. I can provide screen shots as of all as needed.
The network equipment I use at home is not Meraki but Ubiquiti so we can rule out network hardware issues from the start.