Okay, things should be fixed for almost everyone. E-Mail in and out should work, although you will have to accept new keys and will have to change your outbound/SMTP settings. The upside is that when you do that, outbound mail from your clients and devices will work much more consistently.
The big not-done-yet thing is the scripts that run the back end of masterapprentice.org.
There are, I'm sure, a lot of little not-done things; please get in touch with me ASAP if something you're used to now doesn't work as you expect, and I'll explain it or fix it, one. ;)