1. How do I get the sub-category alias to show up in the url.

example: http://mysite.com/blog/reviews/nes/1107-Castlevania

I can't figure out how to get the Subcategories Alias - nes in the url.

The only way to achieve this is for you to create a menu structure that has a nested level. I believe your menu structure should be something like this

Main Menu
|_ Blog
|_ Reviews (Single category layout for reviews category)
|_ Nes (Single category layout for reviews nes)

2nd Question:
How to I import blog pages with article ID in url? I don't want the category id or anything else. I just need the article Id to be imported?

Hm, not really sure what do you mean here.

2nd Question:
How to I import blog pages with article ID in url? I don't want the category id or anything else. I just need the article Id to be imported?

Hm, not really sure what do you mean here.

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When I go to migrate my joomla articles into easy blog, I need the articles to import with the article ID in the url before the

title.

Example the permalink for the article should be 1078-the-article-title

You can enable this setting Use IDs in URL from your backend > Easyblog > setting > SEO .

But if you would like to display the exactly same Joomla article id in Easyblog URL, unfortunately that was not possible to achieve this is because this blog id is auto generated it during migration.