I can't click the pop-up-palette

Hello I have a problem.
I’m using huion kamvas pro 16 win10 Krita 4.4.3
First I can use a pop-up -pallet smoothly.
After I used the browser or some other software I can indicate the pallet but it would disappear with my clicking.
Please Help me.

Hmm, this sounds like a driver problem. I had a problem with the xppen driver too where assigning right click to my pen to open the popup pallete was a hit or miss. I ended up reassigning this function to ctrl+; and assigning that one to my pen. Check if this works. This option is under Settings → Configure krita → camvas input settings .