Rich snippet options Structured data Schema Type “Webpage” and “Store”

Hello!

YASR only supports the itemType that can show ratings in serps, you can find a list here https://developers.google.com/search/docs/data-types/review-snippet

BlogPosting is still there for backward compatibility reasons; soon or later will be dropped out.

Further, webPage is not a valid target for ratings; you can test this by yourself adding this lines in your child theme

add_filter('yasr_filter_existing_schema', 'yasr_use_webpage');

function yasr_use_webpage($rich_snippet){
    $rich_snippet['@type'] = 'WebPage';
    return $rich_snippet;
}

Best,
Dario