522 code error when use custom wildcard subdomain in Workers

Hi Community,
Thanks for great product!

I use the custom domain in Worker, when use the non-wildcard subdomain eg: worker.tancloud.io, it work succcess! But i need use the wildcard subdomain eg *.usthe.com, and access eg demo.usthe.com in chrome return the 522 code error. Please help me known if any step i need config or it is a bug?

Thanks Again!
Tom

refer this setp ** Route all wildcard through Cloudflare Workers** Cloudflare Pages to Handle All Subdomains (Wildcard record for Custom Domain) - Stack Overflow