Adobe Font not working on website - header info & html are correct

I'm trying to use a couple of Adobe fonts for a new, unpublished, website and they've stopped working some time in the past couple of weeks.

I've created a web project with the fonts I want to use, and have put the required code into my header.php file. When I preview a page with the fonts activated on them, the text doesn't appear in those fonts. I can see in the Developer Tools (F12) on the webpage that the header does indeed contain the correct code, and that the text that I wish to be in the Adobe font has the correct html. 

See attached images for more info.

Any ideas why the font isn't appearing as the correct Adobe font?

Many thanks.