Strange. Did you install CubeIDE as admin?
Try right-clicking over C:\ST -> Properties -> Security -> Advanced
Change owner to Everyone, tick "Replace all owner in objects and subfolders", click Apply.
In permissions, click Add, Select entity, write "Everyone", tick "Total control", click "Replace all entries", click Apply.
Now accessing ST folder shouldn't require admin rights whatsoever.
It's definitely not 2>nul >nul, because I unsilenced it and CubeIDE specifically shows an error that states the 2 is being interpreted as an argument.
So you induced a fault yourself. To unsilence it you must remove the entire "2>nul >nul", leaving the "2" is wrong.
>nul redirects the standard output.
2>nul redirects the error output.
Stand works fine on stock firmware, it triggers standby when the iron contacts the metal. I don't think any other Quicko stations have used this in the past have they so there's probably just not code in it for CFW?
So there's a dedicated input for stand in this board? First one having this. The CFW expects you to reroute the original shake signal, as explained in the manual.
There you'll also see there's an option to invert the encoder rotation.