I wanted to make use of the membership plugin to alow only registered visitors to read certain docs

But membership does not function the widgets are not allowing for movement to set up the membership. previously this site was set up with Permisions plugin which has been removed and I don't know where else to look for a cause of the issue. the widgets appear on the page for setting up access but they do not respond to any attempt at change this is for the site vitalizerplus.biz. can any one help correct this issue. I have share access for this purpose through the admin for all sites. you assist would be greatly appreciated. thanks in advance.