Some extra things to know…
To use Make 2017 features doesn’t need you to sign in, until you use certain features. Those include 3D Warehouse, Extension Warehouse, and Add Location. To use those you do need to sign in, and you will want to use the same email and password you were using with Shop.
One important thing though, that sign in window is within SketchUp, and it won’t know your passwords that a browser may have remembered. If you can’t remember the password, check in your browser to see what you use to sign into Sketchup.com, and the details will be the same that is needed inside the Make sign in screen.