Bear with me, this is complicated (I REALLY hope one of you comes along and says, no it isn't!)
Scenario
A client has multiple english pages, as they have a unique product offering in AUS, US, UK, NZ and also have a global site in english.
Obviously there is a lot of duplicate content and they have the relevant href lang tags set-up to help Google untangle what should be ranked where. They also have rel-canonical on each page.
I've set-up search console for each of the folder structures, i.e. en-us, en-gb, en-au and so on.
They have an optimised page for one of their primary keywords, which ranks nowhere for this exact keyword, but this page DOES rank for 40 similar keywords.
For the exact keyword, they rank 52nd, and frustratingly, it's the homepage that ranks.
We know the correct page is ranking and is indexed because search console tells us so and we see the exact page appear in SERPs for the other 40 keywords.
When I look at the en-us site in Search Console, it tells me that the home page is not being indexed, because a rel canonical tag is prioritising an alternative page (probably the global site) - however, the en-us homepage is showing up in rankings for a lot of their important keywords.
The site has been live for 6 months and the optimised page for about 3 months.
Questions
1. If search console is saying the homepage is not ranking, how is it showing up in SERPs?
2. Why is the homepage ranking for this important keyword, when there is virtually no mention of the keyword versus the page that is almost perfect according to Moz's on-page grader?
3. Do you need href lang tags AND rel canonical on a page?
4. How long before a new page that is optimised for a keyword take to replace (and hopefully surpass) the homepage?
5. If the US is the most important market, should we guide Google to that fact using rel-canonical?
Really appreciate your feedback, hivemind.
Thanks