onkeypress is crossed out, apparently it's not up-to-date, do you have a solution for that

[NeoBK0]

Data is not exported to Data.txt

[JohnHoder]

What browser do you use? Did you try also different browsers?

From what I understand from the recent mozilla documentation, it should still be working in most cases. For the exceptions see below:
https://developer.mozilla.org/en-US/docs/Web/API/Element/keypress_event#browser_compatibility