Launch Foxit. 

A window will appear saying “To finish your PDF Editor activation, sign in with your organization’s account.” 

Click Sign In. 

Another window will pop up, with a place to sign in. 

Enter your UMass email address. 

Foxit will then redirect to the University of Massachusetts Amherst Single Sign On (UMass SSO) and will require the normal steps, including two-step login. 

Click the “UNIV OF MASS Organization Service” button.  

Click “Sign In” button.  

When those steps are completed, a window will say "You have successfully registered your formal license key.” 

Click OK.  

You can now start using Foxit.