Hi , I can’t really say what’s the reason behind the server delayed response , Unfortunalty the same problem occurs on Safari as well ( OSX ) .
Maybe it’s a code quality problem , Or it’s a server-related problem …
Also I don’t see any https requests in your code , Beside “https://api.w.org” of course ,
Maybe I’m missing something ? … I’m on Chrome as well .
Also you can argue about the “header” validation error with the reviewer , I would fix it if I were in your position … Many buyers check the theme they want to buy for validation errors first .
Good luck.