Link to blog automatically going to my website homepage

I have a blog setup and posting seemed to be working fine. Then one day a customer brought it to my attention that my blog link wasn’t working. The site link is https://www.premierprintinginc.com

If you click on the blog link, you’ll see that it just opens a new window and goes to my website homepage (not my wordpress blog homepage). The address that the “Blog” link on the website is linking to is https://www.premierprintinginc.com/fb

That’s what it’s always been, and it has suddenly stopped. Now when you go to the https://www.premierprintinginc.com/fb link, it does the same thing…goes right to my website home page which is bizarre.

All I can really do is create new posts and direct people to the link of the post.
Example: https://premierprintinginc.com/fb/2013/05/20/fire-hot-to-ice-cold-full-color-van-wrap/
Which they can view just fine, but when you try to go to the main page of the blog to look at other posts, the issue becomes apparent.

Any help is appreciated!