Change WordPress user roles and capabilities › Forums › Restrict or Permit access inside WordPress – how to › Allow Contributor Role to Manage User Accounts › Reply To: Allow Contributor Role to Manage User Accounts
Pro version is built on the top of a free version and includes a copy of a free version as a core. Thus both free and Pro version use the same database record to same the settings you made. When you delete free version via WordPress options record was removed and Pro version had to start with default options.
Send administrator login credentials to the support [at-sign] role-editor.com
I will check your settings on-site.