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Hi there, While I agree with Logan that hreflang may actually be your best bet, in response to those specific questions: Cross-domain canonicals are not inherently problematic. By my understanding, at least, you're free to use rel="canonical" whenever you deem appropriate.

I'd be happy to take a deeper look. Generally speaking, if Moz and Google can reach the pages via their crawls, it should be indexable. Would you be willing to share the actual URLs with me via Private Message? Thanks

How long has it been since the change? Google will need weeks and week to recrawl and reindex all the stuff. If it's been a while, this is one of those issues where we kind of need the URL. It can be a lot of different things, and sometimes it's a lot faster and easier if someone just gets in there and digs around.

That what I do. All important old urls will have and 301 redirect. I contact webmasters to change links to new urls. As far I know rel is just a recommendation to s.e. but it´s not a redirect. I prefer to have rel but change in urls must have 301 redirect to transfer link value. Hope help you Dani

Joram is correct here. We don't crawl the web as deep or as fast as Google. Our crawl updates about once a month, so right now we're showing you data from before you made your URL change. It'll be 1-2 updates before we see the new URL and start reflecting accurate information about its metrics.

Yes, i set it up a couple of weeks ago, i ll ask support too