I have started the event and completed it however for one of the races I did not have the difficulty on Highly Skilled. I finished the event only to realize I did not get the BMW M3 because of it. I redid the whole event again and completed it as champion however no BMW was awarded and when I go to the festival playlist the Power struggle icon shows ‘Not complete’ did it again and nothing. Is it that if you complete the championship but not in Highly Skilled you disqualify yourself from doing again correctly? I have not come across this situation on FH 5.
You need to complete all races on HS or above in fh4 and win the championship to get the top prize.
Fh5 defaults the championships to HS regardless of difficulty you have set
Have you restarted game and console?