UPDATE: Everything is working fine with upgrade of IP Board 4.5.2 Apparently, when you upgrade to a new version of the software, it turns off marketplace apps, and you must turn them back on - which I had not done! Thanks @StuartIPS for the help. Great product.
It is not working currently with 4.5 as far as I can tell... I am pretty naive when it comes to forum software - so when I upgraded to 4.5 I didn't think anything of it. Just had customer reach out and let me they cannot get logged into the forum from our wordpress site link. Now I am trying to figure out how I can revert to an older version...