Here is a copy and paste of an email from Scrapebox support:
"
Sorry you are having issues with the latest version..
We do have an older version on our server which can be downloaded from: http://www.scrapebox.com/dl/ScrapeBox-old.pkg
Hopefully this version is working for you. We have contacted the developer the compiler we use to create ScrapeBox with letting them know there's an issue with their FireMonkey framework. It appears the latest Firemonkey framework is detecting some Macbook's with High Sierra as a mobile device, but it's not happening to everyone. We will push out an update for ScrapeBox as soon as they provide a resolution.
"