I don’t see why Google should complain about your site lacking a hrefang attribute. As far as I can see, it’s not multilingual and so you don’t need such an attribute poiting to the other language. My personal blog is multilingual and therefore I have those attributes on all pages.

And I also don’t see how this relates “partially” to my plugin, as it’s only for switching the backend language which Google shouldn’t care about at all 🙂

I do know how to do multilingual WordPress sites, that’s correct. And I’ve also multiple plugins for language related things. But as long as you don’t want to go multilingual with your website, just ignore the warning.

Hi indobetplay,

my plugin has nothin to do with setting the hreflang, but as far as I can see from your website, you set it to hreflang=”x” for all languages.

The whole point of using the hreflang is to tell Google, that the page is also available in other languages, so you need to have multiple hreflang settings with different values.

You can read more about that here: https://support.google.com/webmasters/answer/189077?hl=en