And if you spammed for post count, a mod will be deleting any of those, so hopefully you posted real content. I checked and your posts look ok.
And make sure you are logged in when you try to PM the guy - until you are a full member the forum tends to forget "Keep me logged in" and logs you out frequently. I would PM first then post "Sending you a PM" in the thread
To PM you click on their name and pick Private Message