Mac problems - keyboard and mouse stop working, now game won't load

New to Timberborn, Mac Sonoma 14.5 on Steam.

Keyboard inputs can drop out. I can carry on with mouse input only, but really had to save and restart. Well it's in dev, so maybe things like that are to be expected.

Today for the first time, mouse inputs dropped out. Couldn't save/restart, had to use Mac's Force Quit function.

Once back to my Mac system, mouse inputs still did not work. I could move the mouse pointer, but no clicks on left/right buttons (standard Mac mouse) were recognised.

Needing the mouse I could't do a system restart so turned off by a long press on the power button.

Restarting the Mac was OK and full mouse use was restored. Steam loaded no problems, but in starting Timberborn, I got a black screen and the spinning Mac beach ball. This lasted a few minutes, before I was returned to the Steam interface, with no error message or clue as to what happened.

Have tried Play, Safe Mode & Mac Workround with no success.

Love the game - any help gratefully received :)