Pcloud sync client behaviour - opening Explorer (ugh) instead of Dopus

I'm using the 4.10 version of the Pcloud Sync Client.

Everytime I'm opening a file explorer by left cliching on the Pcloud icon in de taksbar, it's opening explorer by default. This probably hard-coded by pcloud itself. What clues should I give this company to change it's behaviour in favour of dopus?

They can open the default file manager by using ShellExecute(Ex) on the folder they want to open, and specifying NULL as the verb. That will work with Opus and File Explorer, whichever is the default, without them having to do detect Opus or do anything specific for it.

On the other hand, if they explicitly run explorer.exe then that's what will open.