Can you reset your “Permalinks” settings and also “Category base” & “Tag base” settings reset to default. Also You need to check your custom menu for this I thisk you have add custom menu and link still go to “About” page. Please check them.
What if I don’t see all the posts in my Blog page with permalink default, but I see recent posts? Do I need to change some settings of the posts or pages cause I have tried pretty much everything and it still doesn’t work. Cheers
Your Blog page has the template set to Blog?
Also, can you check if the permalinks were written to your .htaccess file? (There must be a warning about permissions in settings->permalinks if WordPress couldn’t write that file for you)