Text box issue on an app

Having trouble placing a text box for dynamic inputs, box when in preview mode doesn’t allowing to add any text. Not sure why?

Are you sing default Bubble input element? Have you checked it doesn’t have “this input is disabled” property checked?

inputting a text box, where is the " this input is disabled?’

So, what is “text box”? If it it a text element - you can’t add (input) any text there. Only to display.