Feedback master button not an option on slide?

Hi,

I created a second feedback master in order to have a different button on a no answer layer (to get rid of the built-in one that has extremely limited design compared to other similar popups).

I duplicated one of our existing feedback master slides, and deleted the button. Created a new one which has a hide layer on click trigger. Doesn't work. Go to the slide, apply the layout, the button appears on the screen but is not a valid object in the trigger list.

I don't understand why this is happening, and need to fix it because otherwise it will jump to the nex slide if they don't answer the question...

Thanks!