Thanks for the responses people.

Though, I am the only person on my IP address

and I'm not using any other SEO software other than Moz.

And it's for the most mundane of searches, of late I've been taking screenshots.

9 out of 10 times I get hit with a captcha.

In my OP google.support pretty much says what the cause is.

Dear Steve,

I've never heard of the importance of a landing page needing to be indexed as it's a single page.

I don't know how having a landing page could be of benefit to you.