Leaving PMs

I've tried leaving PMs for a couple of profiles now and always get this message:

"Only active community members can send private messages to escorts directly.
Either the escort opted out of receiving PMs or you or the escort are banned on the forum."

What does it take to be an "active community member"? Is it as simple as leaving a post (like this one?). I am a registered user and have left one review so far.

Thanks!