Sentence review - speaking exercise not for tablet/mobile

I love the new review option but dont own a computer/ laptop. If it comes to speaking there is a prompt to press enter, which I cant do since no keyboard is available to me. Can you please offer this exercise with hitting a button only. The button is there, it just doesnt work.

Are you using iOS or Android app? We will check the button issue.

Neither, kindle fire hd (no idea about the system but the browser is silk). I can click on start speaking but then I see a message saying please hit enter, and if I speak nothing happens

Thanks, we’ll check that.