C3 now NOT seeing a connected BT le device?

So after all the other issues with MIDI control, now all of a sudden C3 refuses to “see” a connected and paired BT le device. This WAS working!

Windows BT sees it, the Korg Editing app sees it, C3 calls it as “disconnected”. No matter how many times I restart C3, or windows for that matter.

Any ideas?

Thanks