Trying to connect iPad Pro or iPhone to MacBook Pro via Bluetooth (technical details such as OS versions are below). It connects and immediately disconnects.
I “Forget this device” on both.
CLUE: If I reconnect from the iPad by tapping on MacBook Pro in the iPad’s Bluetooth panel, I get: “Pairing Unsuccessful. ‘Moe’s MacBook Pro’ is not supported.”
On the Mac, I connect to the iPad (or iPhone, same symptoms) and the 6-digit code appears, I tap Pair and now the devices appear on each other’s Bluetooth panels, but show as “Not connected.” If I connect from the Mac, it connects for one second and disconnects; if I connect using the iPad, I get the “not supported” message again.
If I connect the devices via USB (direct, no hub), I see the iPad in the Finder sidebar but if I go to connect via Sidecar, I cannot see the ipad in the Displays preferences (under Add Display). So stuck again.
iPad Pro (9.7", iOS 15.1)
iPhone 13 Pro
MacBook Pro (Early 2015, MacOS 12.0.1)
All on same wifi network
All logged in to same iCloud ID