I can't PM anyone, says error and takes me to a different page. Whatsup with this

[Mackadizzle]

title says it all

[Faudo]

You have to delete some of your pm's you can only have a certain amount.

[Simon]

As a normal user, you're only allowed a certain amount of personal messages, delete some and then retry.

[Jordan]

Delete some PMs. It's due to your previous rank that allowed more PMs expiring.