I must have posted in the wrong area before, because

I must have posted in the wrong area before, because I'm not getting any more responses, and the one suggestion I got caused more problems. After researching, it's not even the recommended way. Could someone please take a look at this post? It defines exactly what needs to be done. I don't think the configuration of the plugin is correct either. Help would be much appreciated.

POST: https://premium.wpmudev.org/forums/topic/need-help-with-membership-plugin-issue