This topic is in extensibility, but it’s clearly a support request. Except it’s a support request for a plugin, so it’s a little bit different.
I see a few options for categorization:
extensibility
support
new subcategory of support, like wordpress
Off Topic (but then, what site should it be on?)
Keep in mind that the resolution of the topic should not affect your opinion, because that isn’t known when you categorize it. (It isn’t known whether the problem is with the Discourse configuration or the Google-side configuration.)
Was it a bug or just a support request? Hard to tell?
Sometimes one turns into the other… If meta isn’t the right place to get support for 3rd party plugins, that’s fine, but based on the above statements, it feels like it would have been better to just recategorize the question into support.
I’d agree with that. Though I see why some people would potentially post bug reports and support requests here, if the author has said to deal with it in a certain way, just refer to them and the announcement post (and if it is at a different place, close the topic). They should take it from there – at least I will.