Yeah, I mean honestly it’s super confusing why the same exact thing happened for me. The play button showed up for me and disappeared when I refreshed. But no matter what I do I cannot get it to show up again, I tried using a vpn, a different browser, my phone, different browsers on my phone, and none of them show the play button. Really odd.
If you are really set on getting the audio before it’s fixed, there’s a way, but I have no clue how to find the audio. By checking the audio that’s used for grammar points right after this grammar point they use a link like this:
“https://dk3kgylsgq3k1.cloudfront.net/audio/N4/Lesson7/152/コーヒーとお茶とどちらがほしいですか。.mp3” and you can download the audio that way. As you can see it goes …N#/Lesson#/###/ExampleSentence.mp3". The 152 I assumed was the number it ranked in the N4 order, but I tried 150 with the か example sentence and I could not get it. I checked other example sentences around this one and some of them randomly go up to 600, so I have no clue how to find the audio except for just inputting every number up to 1000 until you are able to download the audio. Not really worth doing that, but I thought I’d mention it.