We run the validator for Player Card on a sample URL from our site, such as:
The validator shows all green, except for the yellow warning indicating *.iatn.net is not yet approved, and provides a button to request approval. We request approval, and then a few weeks later we get an email stating:
“The URL you provided for iatn.net to use the player card did not validate. Please make sure the page contains valid metadata, then reapply for a Twitter card.”
Yet it provides us with no explanation as to why it thinks we’re not validating, which is especially confusing since the site validates during the request process!
This has now happened to us TWICE. The first time, it happened after waiting around THREE MONTHS after the initial request for approval for our domain.