All SEO tools I've tested report "No h1" etc. for my most important page. But there are h1, h2 etc. but they are placed in content that is loaded via JavaScript, which is a mandatory property of the Shopsoftware used (Shopware).
I expect that Google will maybe do better than those SEO tools and will probably see the AJAXed content? Will it?
Today Google can Crawl your AJAXed content
Today, as long as you're not blocking Googlebot from crawling your JavaScript or CSS files, we are generally able to render and understand your web pages like modern browsers.
But it recommends following the principles of progressive enhancement.
https://webmasters.googleblog.com/2015/10/deprecating-our-ajax-crawling-scheme.html
You can check whether Google is seeing the final rendered page - and thus, whether it is noticing your h1 tags and other elements - by using the URL Inspection Tool inside Search Console. (See "View the rendered page" at the bottom of the article for current instructions.) If this tool does show all the content you want indexed, you may wish to contact the authors of the tools to let them know their crawlers aren't up to date with what Google recognizes.
