If you can open Foxflash software normally, but cannot select driver, language, etc, just follow the method in this post to solve the problem.
The solution offered by foxflash.co.uk:
Foxflash ECU programmer must be connected and powered, device driver must be installed correctly (check windows device manager), Windows time auto sync must be off, Foxflash manager app/KTsuit manager must be opened and activated when using Foxflash software.
How to run foxflash/ New KT200 software?
1.Shutdown date and time automatically syncs
3.Shutdown antivirus system
4.Run foxflash manger click active button
5.Keep Foxflash Manager/KTsuit Manager running
6.Run Foxflash/KTsuit software