Anyone have experience with the Canva button?

I came across the "Canva Button" (Canva's design button API) a few months ago, but was sad to find out that "Due to the high volume of requests, we're not currently accepting new applications" to use the API.

I keep checking back periodically to see if they open it up, but no luck. I've also tried to contact them in several different ways, but have not yet managed to uncover the secrets of how to get my inquiry in front of the right person or even get any sort of response.

Anybody use the Button before or know anything about the closure?