Touchscreen - Can't scroll and Rightclick

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Helo,

I've bought a brand new Iiyama T2336MSC-B2 Touchscreen.

And my problem is, that I can't do two finger scrolling. And right click, when I press longer, doesn't work. Would be great, if there would be zoom with two fingers.

How can I fix this?

I already installed Grab & Touch for Firefox. Works fine, but I need two finger scrolling for other applications, too.