Download 2018?

I have a sketchup pro 2018 license and need to put it on a new computer. I can’t find a download for 2018. Is there a separate link or can I use 2019 with my existing license?

sketchup.com/download/all

2019 will require a new license but if you have renewed the 2018 license, it should include a 2019 license. You’d get the new license by e-mail within in the next few days.