It doesn't keep blocking, you obviously need to have your message approved by a moderator first. And secondly, you shouldn't try to meet anyone at first as there are infiltrators. It's not really for meeting random people whom you don't know, that's the worst thing to do. We're mostly here to provide online guidance and support for practicing SS's.
Like I said, SS is mostly a solitary religion, practiced in the safety of your home, and it's not recommended to try to meet others unless you've been practicing by yourself for at least 1 year, you have read everything in JoS and you know how to tell lies and self-deception of others and how to spot an infiltrator.