The mystery has been solved. Asterisk has been mispelled as Asterix and that is why it doesn't work. The quiz will be updated soon to add the missing Obelix key.
"asterisk" or any variation of "multiply" doesn't work, "del" works for only one of two delete keys, "dash" doesn't work, and please accept "return" for "enter"
Also, that button underneath the backspace is just not standard as far as I'm concerned - I'm not aware of ever having seen it! What is it? On the other hand you seem to be missing the hash key to the right of the apostrophe. Perhaps this is the American keyboard or something? I'm not sure.
I am still totally in the dark as to what ` is called, but that's my own affair
/ (stroke or oblique)
* (star, times or multiply)
. (full stop, point or dot)
Also, that button underneath the backspace is just not standard as far as I'm concerned - I'm not aware of ever having seen it! What is it? On the other hand you seem to be missing the hash key to the right of the apostrophe. Perhaps this is the American keyboard or something? I'm not sure.
I am still totally in the dark as to what ` is called, but that's my own affair