O365 management error "Please select at least one license"

O365 management error "Please select at least one license"

Hello,

ADManager Build 6500

I'm not sure how to use the O365 Management feature. 
I have an O365 account setup in ADManager, and it accepts/tests fine. 
I also have the Azure AD Windows Powershell module installed on the server. 

When I go into AD Mgmt > Office 365 Management > Assign / Remove Licenses, I see the 3,700  users in O365 and their licenses. However, I don't appear to have any options or features to do anything with them. 

If I select someone from the list and try remove license or something, I just get an error that says "Please select at least once license". 

But I'm not seeing anywhere to select a license on my screen, as shown: 



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