You can get help for many of the most common issues from our friendly forum users here.
We just launched SketchUp Pro 2021! If you are reaching out to recover your license details, please check our License Wizard. If you have a SketchUp Pro subscription, you don't need a license! you can just sign in with your Trimble ID. You can download SketchUp Pro 2021 here. We have an installation video for SketchUp Pro 2021 here.
You also find answers to common questions about education licenses.
Note: The difference between educational licenses and commercial licenses is that educational licenses have an expiration date. Functionally, there's no difference at all - both licenses allow you to do exactly the same things in SketchUp. Because educational licenses expire, though, we're able to offer free version upgrades on educational licensees, and no maintenance fees.