Am i restricted from joining multiplayer? Just wondering because this account doesn't let me player multiplayer but my other account I made does let me play multiplayer (raratester).

What message do you receive when you try to play Multiplayer?

Could you provide a screenshot of what comes up when you try to play multiplayer?
It could be that you've changed your password and need to enter the new one in the login page.
Go to setup > login > and enter your login details correctly, that could be the issue.