Classifieds - free listings stop working

Hi, we have a problem: when we tested our new site, we chose free listing and everything was OK, but last week we moved the site to another server and now even if we chose free listings in settings, after clicking on this button (create classified) it redirects to page with payment (TOS and contact info) instead of "create classified form". We don't want that to work that way.
And also, there was an update of this plugin last week - we updated it. Were there any changes in templates or source files which could cause this problem? Because I really don't know what is the source of this change of behavior.