{first_name} displaying wrong name

I have 2 memberships: Member and Board Member. When I used this code as a greeting on different pages, it has different outcomes:

[um_loggedin]Welcome {first_name}. [/um_loggedin]

It should display the logged-in user’s first name but that’s not what’s happening. On the Board Member page, it has the correct name using this exact code and it displays the correct name. On the Member page, it shows the Admin’s first name (Alice) which is me. How can it be displaying a different name using the same code on 2 different pages? I copied the working code over to the page where it is incorrect, and it still shows the Admin’s name. Really stumped on this one. And I’ve used this code before without problems. It may have just happened because I think someone would’ve reported it before today.

The page I need help with: [log in to see the link]