I am almost sure that you need an Enterprise license for that. Or at least is used to be like that:
https://www.wolfram.com/cdf/adopting-cdf/cdf-and-mathematica-comparison.html
You should ask a staff member about it.
Hm. Me too.
I see the same. When opened in Wolfram Player the output will only change if the new input is a single number.
