Question about Xiaomi Redmi Smart Pen

We had to return it because it is not compatible with our Xaiomi pad.

If you have the Xiaomi Redmi Pad Pro, there shouldn't really be any problems.

I don't have this app, but I have OneNote, for example, and I can do everything there (and everywhere else) that I could do with the mouse cursor. But it's much better with the pen.
Here https://www.youtube.com/watch has a tutorial. From 2:55 he explains the buttons.