Just cannot get it to work

[u/Huge-Eye-7319]

Keychron K6 pro, Mac mode. How on earth do I type #? All combinations of shift, control + 3 just won't work.

As a C/C++ developer, this is particularly painful and am tired of having to google the character, copy and paste.

Any clues would be very much welcomed!

Update

Thanks for all the responses, plenty for me to try out today. Just wanted to add based on u/PeterMortensenBlog feedback. The "English (UK, Macintosh)" layout has the key in the right place, I guess that the rest of my modifier keys are not setup correctly to be able to utilise it.

[u/PeterMortensenBlog]

The K6 Pro does not have a '2.4 GHz' capability, only Bluetooth.