You have this real issue with GavickPro templates, especially with the Reporter template. If you publish an article on the site and want to post it immediately on social media, it doesn't work. It doesn't work even with Facebook Debug. After some time, maybe a day, it starts to work. I don't understand why, but that's how it happens. To solve the problem, I bought the Social Media Meta Tag Generator from TemplatePlazza, and now everything works fine. I don't understand why it doesn't work with JoomlArt/GavickPro.