How do I enable paying members to 'add a listing'

Hello again

I have membership installed with classifieds and directory plugins.

I want my paying members to be able to add a classifieds listing. But I am unable to make the button appear on their profile page.

I have gone through the membership/access levels and added positive plugin rules.

I have set up new user roles.

The video tutorial seemed to stop at the point I needed.

I think I may be missing something to do with the short codes, but I don't know what.

Somebody did suggest setting up coupons from the classifieds plugin, and giving the code to paying members but there doesn't seem to be a coupon facility from my classifieds dashboard.

Can anyone suggest something I could try?

I'm so stuck.