I followed the instructions and have Cutout 6 installed & registered. Works fine on my Win 10/64 system, 16 GB memory.
I already had an account with Franzis, so the process might be different if you’re setting up a new account.
I tried a picture of a person which, by chance, had a lot of the same colors as the background. Did the inside/outside selection process, clicked the Matte button, and instantly had a nearly perfect cutout. Hair was intact, though some of the background showed through it (blonde hair with a darker background). Can’t imagine a program that could sort that out! Anyway, this version seems to work MUCH better than version 5, and has more options to help with different kinds of photos.
Thanks Franzis and SOS, I finally have a program that lets me get a good cutout faster than a paint program.