Upload Tiny sample to facebook playable ads, but can't show in App Demo for preview

Hello, I tried to build a tiny Web asmJS & Wasm,
and upload to Facebook for playable ads, can open game via Vscode Live Server
But I can't see App Demo in the preview window from the following link, how can I do?

Could anyone give me any hint? thanks very much.
https://developers.facebook.com/tools/playable-preview/

 

Thanks for your reply.
OK, I also try the custom web template as you said, even I tried the way like here link. (way2)
I'll still try the way.

 

Thanks your tried, I look forward Unity Tiny can support Facebook playable ads in future.

 

OK, thanks for your comment, now I understand why this tool doesn't work. Anyway, I decided to entrust this issue to the professionals and hired an fb advertising agent I found on https://aiad.com.au/services/facebook-advertising/ . I realized that if I invest in quality social media advertising, I can earn three times more and I hope that I will achieve the desired result. In fact, I used to be sceptical and didn't believe in advertising on FB, but then I saw the business pages of my competitors and realized that I was behind them, so I decided to do everything possible to make my page one of the best and attract as many customers as possible.