Please read this post: https://wpforo.com/community/general-discussions/documentation-request-explanation-of-forum-recent-view-url-views/#post-61270

In this post, Robert explains the meanings of the URLs, clarifying that these URLs do not have any effect on your website's SEO.

1. "Alternate page with proper canonical tag", as you can see here: https://www.awesomescreenshot.com/image/49702801?key=a85397dfc2fa374dced6961e31784fbc; 
2. "Duplicate, Google chose different canonical than user", as you can see here: https://www.awesomescreenshot.com/image/49702811?key=964581cc692def8d7e45b696bcb55e9a; 
3. "Duplicate without user-selected canonical", as you can see here: https://www.awesomescreenshot.com/image/49702811?key=964581cc692def8d7e45b696bcb55e9a. 

I found out that all this goes back to the main community page. I added a title and a 1 paragraph description which serve as page excerpts. This page title and description are on every one of the wp-foro pages, even on topic and reply pages, user profile pages, and so on. So it seems like search engines see most of these pages as duplicates. For more details, you can check my community at davidcelestin.com/community. to see for yourself. 

Any help will be appreciated. Thanks in advance.