@cwmunro said:

I am trying to upgrade to 18 (through the Help Menu and through the SU website) and it says I'm currently using the latest version (2017).

What's up with that??

Pro users should be receiving update emails in the next day or so.

But, if you want to upgrade now, you can check your license status here: https://www.sketchup.com/license/renew

Then you can download the new version of 2018 on the website and plug in your license info: https://www.sketchup.com/download/all