Here is the guide to program Subaru XV 2015 80Bit G transponder with the Key Pro M8 auto key programmer (MVP Pro clone).
You need 2 keys, one working key and another key blank.
In key pro M8 vehicle selection menu you select Subaru

Select By system

Select Immobilizer
Select Post 2000
Select Type 8


Insert key into ignition, switch ignition ON

Select Special Functions in Diagnostic menu

Select Keys Programmed

Switch ignition ON
Key count 2

Select Program Keys

Switch ignition ON with working key
Remove the key
Switch ignition on with new virgin key

Key count 3.
New key has been successfully programmed

Start the car with the new key.
Done!