How does one make this open-access journal zotero compatible?

Water Alternatives is a very respectable open-access journal in the field of water.
http://www.water-alternatives.org/index.php/alldoc/articles/vol3/v3issue2/85-a3-2-8

But when one visits individual articles, the zotero connector does not 'light up' for full text download as usual.

What should one tell the editors/publishers to do to make it work?
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