To update: now that I have a tweet to test since $streamerGuy went live
Mine is still working
I’m using the following:
<meta name="twitter:player" content="https://player.twitch.tv/?volume=0.34&muted&channel=cohhcarnage&parent=cards-dev.twitter.com&parent=twitter.com&parent=cards-frame.twitter.com&parent=tweetdeck.twitter.com" />
So I’m guessing you are missing the cards-frame.twitter.com also note that my domain isn’t in the list at all. Just Twitter ones, since Twitter takes the passed player meta tag and embeds that into Twitter site. It just uses your site to get the meta tags.
Yours, having checked view-source:https://hihellorachel.tv/live/ is just
<meta name="twitter:player" content="https://player.twitch.tv/?channel=hihellorachel&html5&muted=true&quality=mobile" />
So you have no parents at all, being passed to the embed that Twitter renders into Twitter.
The page/link (in theory) doesn’t need an Iframe/the stream on it at all, since Twitter looks for the meta tag. So if you do have an iFrame on there you just need the parents for your site, not Twitter’s as well
Mine is https://cohh.tv/