I have multisite, buddypress, pro site. I just created a subsite and installed membership plugin. I have done this successfully on 2 other subsites. One of the subsites already configured has a free membership for the existing pro site members. Sign up is working perfectly for that subsite.
So I duplicated the steps that I went through for that first subsite that has free membership that everything works fine on. Not the case with this new subsite. I am enclosing the screenshots for all of my settings:
--registration page with shortcode
Then I am enclosing each step of the sign up process for this free member so you can see the problems.
Thanks in advance for you help!