WPLMS Woo plugin – add description attributes to URL

I am trying to show variation descriptions that I have created with the WPLMS Woo Commerce plugin in my Woo Commerce cart. Customer flow:  Product landing page -- select options -- click button custom URL to add the variation that they have chosen directly to the cart.  Customer will never see Woo Commerce product page. I can get the URL to add the product to the cart, but it only shows the generic description so customers won't know what variables they are getting. For example, I get an error with https://sensiblemoneysolutions.com/cart/?add-to-cart=3630&variation_id=3649&attribute_pa_Duration=OneYear&attribute_pa_Students=2&attribute_pa_LiveSessions=No  Error says Duration, Students, and LiveSessions are required fields. But if I use https://sensiblemoneysolutions.com/cart/?add-to-cart=3649 it will add the right product, variations & price to the cart, but won't show the customer that they have bought one year access for 2 students without any live sessions. I tried looking for product slug under products - attributes but there are none set up there.  The plugin must put them somewhere else?  Where can I find the product slugs created by the plugin?