Membership 2 pro Password Issue

I have setup the plugin membership 2 pro. I am seeing several issues. These issues my be tied together. Below is the list.

1. I can create a user initially using the Membership 2 pro front end it works with no issues, until i change the permission from admin side.

Once I change the permissions:

A. The users old password no longer works.

B. When the user resets their own password the link that is mailed to them sends them to a blank page.

C. If i reset the password from the admin side the password does not work.

D. Resetting the permission breaks the password, then if i reassign a new password, from the admin side, the new password does not work.

All other features of Membership 2 pro work fine.