Link Sketchup pro 2018

I just reached out to Sketchup Customer Service to see where I could download the 2018 version.
My PC has “crashed” and I need to reinstall the sketchup Pro version 2018 .
They told me to go on this forum in order to get the 2018 link since they don’t have it anymore.
Thank you to anyone who can help me (I have my autorisation code)
Many thanks

I’ll ping @colin for this as it sounds like something the support boys would never say.