Anybody can help ?
Example URL:https://www.amazon.de/gp/aw/sp.html?a=B00OB6S1EQ&s=AD7UHWVBR5ABF 
Hi,
The link you provided contains a redirect to the following page which gives me the correct H1 tag:
https://www.amazon.de/sp?_encoding=UTF8&asin=B00OB6S1EQ&isAmazonFulfilled=&isCBA=&marketplaceID=A1PA6795UKMFR9&orderID=&seller=AD7UHWVBR5ABF&tab=home&vasStoreID=