Finally, after many months and quite a bit of encouragement from fellow puzzlers I have managed to solve Alles Roger! Thank you to all of you who convinced me not to give up on it. And even a thank you to those of your who mocked me constantly for not being able to work it out. Although I remember who you are and I'll get you back eventually!
R2D2 (also by Roger) I can definitely confirm that it is nowhere near similar as a puzzle.
What a great design! It looks so simple and yet somehow it took me forever to solve. I know that it took some other puzzlers far less time to solve, so it could just be some kind of mental block that I had. But I really was starting to lose faith in this puzzle even being possible.