There’s no reason you can’t. Please create a thread on the forum to get some guidance. It’s probably something pretty simple.

Yes USB power and LAN connection is a good way to start.

Perhaps you should create a forum post for more detailed assistance. https://forum.duet3d.com/

The text box in the config tool cuts off the last digit from display.

Please use the forums https://forum.duet3d.com/

I’m not familiar enough with Klipper to say.

Still in relation to the z probe offset set in G31.

Please use the forum for support requests. https://forum.duet3d.com/unread

it sounds like your endstop is wired incorrectly and shorting. Check your wiring and consult the endstop wiki entry. If you require further assistance please create a forum thread where it's easier to provide 1 on 1 help.

If the nozzle is hitting before the BLtouch pin, then you need to mount the BLtouch lower or it’s not deploying the pin. Either way, please create a forum thread. https://forum.duet3d.com/categories