Blogpost error from structured data testing tool

the SD markup is all incorrect, as expected from a theme that comes with schema.org implemented by people which are not SD professionals
+ this is not a blog, it’s a site presenting multiple coupons (offers), therefore, all SD markup must be changed (vocabularies)
blogpost error like “The property blogPost is not recognized by Google for an object of type WebPage.” This is not the only error… all the markup is full of errors… it’s just like it was made with copy/paste from the schema.org website
none of the SD has been correctly implemented

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