The University of Iowa has a set of licenses available for the SketchUp Pro 2017 program to be used on campus. The program when launched requires the license to be added prior to usage.
When launched you will see the screen stating "Oops... Your SketchUp Pro 2017 license has expired." This actually is not the case. The software is not able to locate the license when it is launched. Unfortunately this is the expected behavior. You need to click the Add License button in order to contact the licensing server.
Once SketchUp Pro 2017 has obtained a license you will need to Choose a Template and then you can start using SketchUp.