It is working for me, on my Android browser; the popup is shown, and it has a working audio button.
That said, on this device, which of course doesn’t have a mouse, it only works on one word at a time, and not on the cloze itself; the environment seems to intercept the selection and inhibit the event that triggers the popup. This is an old bug, but I thought I’d mention it anyway.
I believe there should be a little icon next to the word zorundasın, that when clicked would play the audio for that selection. I’ve tried this on other languages pairs, with the same luck.