You have either entered your details back wrong or you need to pull your real UUID and MAC address from the system and replace the generated uuid in the plist with your real one and then your problems will be solved.
this is NOT a new problem, this is very common.
F12 into windows and then run these commands
wmic csproduct get "UUID" > C:\UUID.txt
wmic nic get "MACAddress" > C:\MAC.txt