I'm a complete flying noob and I'm driving myself crazy trying to find out if I can do this. I have a Skymiles account and a Flying Blue Account (the latter of which I just made to monitor my flights). I've booked on Air France for a trip to Paris, but I'd like the mileage to be credited to my Skymiles account and not the Flying Blue account. Every time I add my Skymiles number to the Air France app, it says "Saved!" then it completely forgets that I've input it and only shows the Flying Blue Account (and it did this before I made a Flying Blue account too).

Am I able to get credited Skymiles for this flight rather than Flying Blue? I did book through the Air France site as Delta was charging 3x the cost for the same flights.

Thanks in advance for any clarification!