Questions about Microsoft Surface Pen

Yes, this pen works on the HP Envy x360 and I use it every day for studying. It works without any restrictions, i.e. you can also assign the buttons as with the Surface etc.

Yes, you can. It works with all Surface devices.

Good day Mr Stritt I use mine with the Surface Book 3. Works perfectly. Have a nice Sunday.

Yes, it should be the right one!

Unfortunately no, apparently Microsoft and Lenovo use different methods for the digitizer: https://www.reddit.com/r/Lenovo/comments/hce4mv/ideapad_flex_5_compatibility_with_surface_pen/