Cant claim forzathon prizes after completion

Is anyone else having the same problem?

I am playing on xbox one x and have just started a new account and have completed some forzathon challenges.

The challenges i have completed are :Welcome to Forza
: August monthly races
:Learning the ropes
They all add up to 1.480.000 credits and this would help dramatically so if anyone else knows how to reclaim of fix the issue I would be very pleased to know.

Also happening to me. Horizon 3 rewards unlocked with no problem.