To get a list of your existing Retailers & Contacts with the state of their website access you can run a simple report from the Inzant Admin website.
Once logged in, navigate to the reporting page. Here, open the "Website" report folder, then open the "Retailers" subfolder.
Click on the report named "Status of Retailer Contacts", and then run in either XLS or CSV to open into excel. Using this report you'll be able to target your customers with insufficient data to setup an online account and then remedy that situation.