UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support Private Messages Disabled?

Hello, I need some help. I'm currently on UBB.threads 7.3.1. I just noticed, even as an admin that when I try to "PM" a user I get this message: "Private messages are disabled." I've looked at my forum and site permissions and I just can't find that setting. Would someone please help me restore this function. Thanks.

try
Control Panel>> Site permissions
Look for anything that has Private topics I think in your version there are two permission settings.
Settings are based on groups such as admin,moderator,user,guest.
Just plug a number you want for each one.

Thanks Ruben. That helped.