I checked, and could see your order for the high res tiles, and I can also see that the download hasn’t happened yet.
I read your support notes. Do you still have SketchUp 2020.2 installed? If you do, try using add location in that version. If you don’t, and are willing to give it a try, the 2020 installer is here:
Hi Colin
Thanks for getting back to me. I installed Sketchup Pro 2020 and got the same error message as with Pro 2021. When I downloaded the first time I was in an untitled Sketchup file- might that be the problem?