In this thread It seems to be a airplane mode which is turned on at boot. But unfortunately no solution found there:
Perhaps it would help to add those commands to autostart. Go to startup applications and click on add:
Name it as you like, e.g.
Disable airplane mode
And as command set
rfkill unblock all && nmcli radio all on
Then reboot and test.
If it doesn't work, try it with this command
sh -c 'rfkill unblock all; nmcli radio all on'
Here is a picture from an older Zorin version. I would try the other commands first as shown but there you see how the app looks.