question about how to reply to ads

Question, I see ads that I want to reply to, but cannot figure out how to do so. on the bottom of the listing is shows "You have insufficient privileges to reply here" even though I am logged in. What am I doing wrong, or what do I need to do to be able to reply to listings of cars for sale?

 

send a private conversation

 

hover over the op avatar then click "start a conversation"

 

I got my *** handed to me when I asked that question a while back about how I hadn't read any of the rules posted by the message board. Actually what was going on was if you are accessing from a mobile device the bar at the bottom is kind of misleading. You have to disregard that bar and send a private message.

 

Keeps the adds as adds and not comment threads