I am sorry to hear the problems faced by you with your Nokia 8. The 8 was/is definitely supported, but I stopped offering it since we do have an official unlock and there's no point for anybody to be paying for something which freely exists.
That said, I definitely can generate a key for your Nokia 8. I'd however need to know more about your phone. Most importantly, the software release that it is running right now. If you have any idea of the security patch installed, please do let me know.
If not, please let me know the output of this command:
fastboot oem getversions. This won't tell us the security patch, but we can make a fair guess from the build number installed on the phone.
The reason I need this is because the unofficial will only work on a pre-August software release.
Also, can you tell more about what exactly happened to the phone. I mean.. how did it die? That can give some idea relating to if it is some hardware gone wrong or entirely software.