Can't add my computer after 12.2 and Apple Music

Basically, since upgraded my version of iTunes to 12.2 and subscribing to Apple Music, I can't seem to add my computer to iTunes Match (which apparently had been disconnected from it). In the iTunes Store main page, I click "iTunes Match." It brings me to a page that says "Add This Computer." I click, enter my password, and nothing happens. I also go to File > Library > Update iCloud Music Library, but that option is greyed out.