@zhuyong
We confirmed by checking the page source?of the given page– https://baltimes.com/shopping/toys/pop-mart/ and confirmed there’s only 1 H1 tag on the source.
Are you using some kind of page builders for the content on your website? We ask because Yoast is not compatible with all page builders. If the page builder has added the right code for Yoast SEO to hook into, Yoast SEO is expected to then scan those modules.
The Yoast plugin expects the only H1 on the page to be the post title. When you add even a single H1 inside the post content area, the plugin will give you a warning about multiple H1s on the page.
We have noticed only a single H1 which is good. Please know that even though Yoast SEO is showing warnings as long as you know you have added the right content like internal links, images, etc., so will Google. Google will still be able to scan the source code of the page. We suggest ignoring it as you only have 1 H1 title.
