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.