Cannot embed basic website links in basic blog posts.

I updated to 3.5 this morning then went to make a blog post. When I clicked the “link” icon to link clicking on a work in the post to an interview I did, nothing happened. Then I went to update my About page, tried to link the the interview there, and nothing.

How do I fix this? Is this a server error? I just need basic use and this is frustrating that I can’t get that. :-/