100% finish all jumps but missing stars

Product: Need for Speed: Unbound
Platform:PC
Summarize your bug i did all the jumps for the car. but im missing 6 stars. idk how but im not interested in trying again all the jumps.
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? just see my account
What happens when the bug occurs? nothing. just want the car haha
What do you expect to see? i just want the nissan

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hi t