Hey grocare,
Its a little bit confusing what you are saying because canonicals are used when there is actual duplicate between pages. Internationalization is a specific case where two pages targetting different countries **ARE NOT **duplicate content, even there are really small differences.
I don't see that you are having an issue with canonical setup, as long as you are using them correctly. More info about canonicals:
- What Google says officially: Consolidate URLs with rel=canonical
- A Moz resource: Canonical tags - Best practice Moz
What I did see is that you are using hreflang tags incorrectly: pointing to the home page.
Consider THIS PAGE, for instance, your hreflang tags are:
When it actually should be pointing to the current page:
Its always good to remember that there are some really good resources about internationalization:
Hreflang generator - Aleyda Solis International SEO - Moz Learning Center The Guide to International Website Expansion: Hreflang, ccTLDs, & More! - Moz Blog The International SEO Checklist - Moz Blog
Hope it helps.
Best luck.
Gaston