what this place

I was able to win

Spoiler

by using only 2 sliders in 3 moves. Should I have been able to do that?

good job

So my next question would be, if this can be solved however you like, is it really a puzzle?

How to make qr code icon display bigger...?

Make sure your device is in portrait, then use the Export button. It's the one to the right of Play. You can see it in your screenshot for this level. Looks like an atomic model.