Listing package expiration issue

Hello,

In Classifieds theme, I’ve set a listing package for 7 days where people pay for featured listings. At expiration, listings should return to a free package (Move to ‘freepk’g, in Listing Expiry option).
But until now, after expiration, nothing change, listings still stay in the initial package.

After exipration, if I’ve a look to the listing pages, there is a ‘Renew now’ button that allows me to renew the listing for free (!) and for 30 days (!), but still with the paying featured option.
So people pay one time for a listing package, and after they can renew it for free !
It’s not what I’m looking for ..

Some one has an idea to solve theses issues ?

Thanks,

Christophe, France