Annotate PDFs Using Pen

[Sloop JB 26]

I have an Dell Inspiron 7000 2-in-1.  I want to annotate a PDF in one of my notes using the Dell active pen, which uses the Microsoft Pen Protocol. But when I open a PDF for annotation, the pen does not work.  Specifically.

1. The icons on the left vanish when I click on them with the pen, so I cannot set the tool/options I want without having to use my finger.
2. If I choose the pen tool and try to write, nothing happens.

Is there something I'm doing wrong?

Thanks in advance!

[PinkElephant 8,194]

Better ask support about it. Maybe they know if it can be solved, for example by installing a new driver.

Apple pencil on the iPad works perfectly.