blocked success

hello I have a problem my success tornado hunter is blocked I have already done the tutorial with the Nissan but it’s not unlock so how can I do now to have it I contact Xbox he have me that you were my only solution because they can do nothing

For support you will now have to file a ticket at the support site, https://support.forzamotorsport.net

I did it but he tells me that I have to see that with Xbox and Xbox tells me to see that with Forza and Forza again tells me that they can not do anything that it is not them who takes care of it