I am trying to understand a problem.
I have several function keys thet are used in the program example
f4=save.

A user reports that sometimes they use a function key and it does nothing.

Of course when I go there it always works so I guess I would have to say "user error"/"user misunderstanding"

Or that some key causes the F keys to no longer work.

The keyboard is German and I tried all kinds of Function keys ect.
But the F keys always seem to work .

Anyone got any ideas what could cause this.

Internally the Keys are set with ON KEY LABEL