Are those tags on '
www.mywebaddress.com
'?
Bear in mind the linter will follow the og:url tag as this tag should point to the canonical URL of the piece of content - so if you have a page, e.g. '
mywebaddress.com/article1
' with an og:url tag pointing to '
mywebaddress.com
', Facebook will go there and read the tags there also.
Failing that, the most common reason i've seen for seemingly correct tags not being detected by the linter is user-agent detection returning different content to Facebook's crawler than the content you're seeing when you manually check