@dave3@mastersmedia11 I have the same problem with this challenge, but it doesn’t work in Firefox either! I’m using Firefox 60.0.2 (64-Bit) on Linux Mint.
I updated Firefox to version 61.0 (64-Bit, Linux Mint) today, but it still didn’t work. I forgot to mention that I can’t see the follow button (follow-btn) in Firefox. At the place, where the button should be, is simply nothing!
So I tried to solve this task in Chromium (V. 65.0.3325.181, official build) and voilà, it worked fine. I could also see the follow button.
Is it possible this is related to adblock in whichever browser you all are using? If you’re unable to see the follow button its quite likely an adblocker has removed it. Might try disabling it. I showed 2 blocked elements on the page, one being the follow button.