I'm sure this is just a switch problem, but I thought I would report it.

The calendar row is not showing up on the forum when you are logged in. You are able to see the calendar row if you are logged out, but you can't see it if you are logged in.

Can you confirm this?

That depends on how you set up your profile.

Go check UCP => Calendar and see how did you set up that options.

I've tested it and works fine.