RFXTX 433 and a button

Hi,

I’m using the RFXTX-433E and trying to find a button that will work with this. So far, there seems to be only one being sold that I can see:

https://www.amazon.co.uk/dp/B07LBR6YMX?psc=1&ref=ppx_yo2ov_dt_b_product_details

It isn’t recognised by the rfxtx at all.

Does anyone know of a button (simple push button) that would work they would recommend?