There is an issue that when you type a command for action messages or games that Plus will block it when a certain "feature" is enabled:

 

If you user the "/me" command with plus it created some weird fake-message that will appear like this:

Fake, as Plus users will see it	Real, as the message looks for everyone else

 

To correct these issues type all your commands with "//" instead of "/". Like: "//me is tired"

 

Remember: Action messages can be read from every WLM user. Even users without PMC or Plus.