After playing with Weebly, I managed to corrupt the link to the blog.

I manage to fix wordpress. The issue was with redirect, see http://www.wpbeginner.com/wp-tutorials/how-to-fix-error-too-many-redirects-issue-in-wordpress/

I changed the General Setttings site address from http://patrikwilliams.com/blog to http://www.patrikwilliams.com/blog/