That is great news. Certainly if you do not need MS for running a community of websites then reverting to standard WordPress will make your whole website management and experience easier. By a long way!
No – nothing was deactivated. We have a very strict policy of only doing what we are asked and, if more is needed, consulting first. I DID try and uninstall our File Uploader plugin but that was all. I figured that the registration form and process was a part of your theme but I do not know for sure.
There are quite a few plugins available that can enhance the site registration process. As with the discussion right at the start of your topics yesterday – it is important to have one that does fire off all the required WP actions. I am afraid I am a little rusty on what is out there as old ones vanish and new ones come along. One that I know people have had success with (including a colleague here at SP) is called ‘Theme my Login’ which is oddly named as it does more than just allow styling and does allow the user to created their own password. And it DOES do what it is supposed to do. Another that used to be popular but I have not heard much about recently was called, if I recall correctly, Registration Redux. All available from the WP Plugin repository.