Hi
They were eventually fixed somehow, not sure what happened, perhaps cookies, etc... But it works the way we did it..
OK, no, there's no magic here! If it "fixed itself" after a bit, it's simply that the URL were not created
yet.
All the URLs on your site are not created instantly. What happens is if someone requests the home page, then all the URLs for the links on the home page are created. The someone click on one of those links, go to another page and then all the links on that second page are created and stored in the database. And so on.
That means if you try to directly load a page deep down in your site right after you install sh404SEF, because you know what it's URL should be, then you will get a 404 because that URL has not been created yet.
But after a while, as visitors and search engines crawl your site, all required URLs are created. This is what happened here I think.
The next and final issue; aside from what I have seeing is that they are soooooo many urls..
As you can imagine that is quite a lot of url's, given what Joomla already does on the backburner.
Not sure what you mean by "what Joomla already does..."?
I logged in and there were less than 125 URLs in the database, that's incredibly tiny, you'll get many, many more. And that's totally fine, expected and usual.
Is there any way to expedite (speed-up) the process in making the best use of sh404.
i.e. canonical urls and much more?
Aside from the URLs, default configuration are usually sane. You'll get OGP and Twitter cards enabled, auto-discovery of images for OGP tags (ie Facebook sharing), automatic meta description when none is present, basic set of structured data.
As for canonical, it's a tricky thing and sh404SEF will insert some but only when it's certain of correctly identifying the canonical URL. Currently, it means we automatically add a canonical on a single Joomla article page. For all other pages, we do not recommend adding a canonical unless a/ you have a specific issue to solve, which should be pretty rare with sh404SEF URL handling and b/ you know what you're doing!
Best regards
Yannick Gaultier
weeblr.com
@weeblr