Membership Plan Setup Issues

Hello,
I have an issue with modifying the plan options of the membership. I have the plugins from the Classima theme, everything else works but I don’t have the option to modify the price, amount of ads allowed, etc of the membership plans. However, I can modify the payment options. In the plugins, it says I have Classified Listing Pro and Classified Listing Store installed.
I would truly appreciate your help to solve my issue.