Hi! About the syntax issue: I've asked an acquaintance of mine, and he fixed it by changing the Parser.js file. Now it accepts both the original "verb + noun" and the intended "noun + verb".
As for the issue with the input of accented letters and ß, I figured out it was an issue with my Internet browser. I explained it in another response, but long story short: My default browser is LibreWolf, a derivate of Firefox, but when I tested on the original Firefox and on Brave, the input works as intended.
If you still want to look at my code, I've uploaded the ZIP with my version on Tresorit to download: https://send.tresorit.com/a#ZJR0CtKUFiHO415_IyqpOg