UHK80 LED shows an alert icon also can't connect through bluetooth when cables are disconnected

[pcooke9]

Any time you restart or power-cycle the UHK, the expected behavior is to load the Base layer of the default keymap. If you want to manually change the default keymap (not just switch keymaps), you can do so here:

Cmd-tab not working on mod layer on macOS, but works otherwise

First, select the Keymap in the left panel, and then click the big star in the main central pane. [Set Default Keymap]