Special characters from my website appear incorrectly in Facebook publications

by GalileoMX   Last Updated May 09, 2018 17:04 PM

I have a website (HTML5/CSS3/PHP) encoded in UTF-8, with the appropiate meta tag (charset='UTF-8'); text displays correctly in web browsers, but when I "publish" the site's URL to Facebook, all special characters appear as a question mark ('?') inside a diamond. I have not been able to replicate this with other URL's. Any ideas of what is happening or how to fix it?

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