Conditional Fields not hiding submit button

Hello,

I have made a conditional group around the submit button to make it show if the result of a text input does not match a certain number but its not working. The submit button is always visible and working normally, even when it should be hidden.

The conditional field looks like this:
if > ‘serial number’ > not equals > ‘12345678’ > then show > ‘submit-button’

So this means that if the ‘serial number’ input equals to 12345678 then the submit button shouldn’t be visible.

How do i fix this?