how to combine classifieds and membership plugins


I would like to include a classifieds section on my site

I have been reviewing your plugin and it looks good.

However, in your site, I have seen this note: “You cannot offer both Free and Paid listings.”

Well, I would like to offer free and paid classifieds. Could you please let me know if I could do it offering coupons on the memership plugin for instance for the free listing?

What I want is to offer free classifieds for 15 days and then pass the people automatically to the paid classified level? (like it can be done in the subscription plans)

Could you please let me know if this can be done? if both plugins could be used to do that? or How should I do it?