I clicked on the link from the email, suddenly the button appears: 
I was able to install it on my test JSS, however, I am seeing some odd behavior which was not the case before I updated to 9.32. While my test machine can still recon in, and the "testJSSconnection" command works just fine, the "jamf manage" command throws a "Connection failure: "The host (null) is not accessible"". The test machine will not update its binary to 9.32 at reboot either.
Edit: Nevermind - had to clean up some settings in the test JSS that carried over from a backup.