Cannot reroll bonus weekly challenge

I have one reroll left. When the challenge was locked, I thought the button would appear as soon as I completed the required challenges. But it doesn't.

I'm not interested in Redsec. For non-French speakers, "Survie" is the Gauntlet mode. I don't want to play that. Please allow me to reroll.

Or better: An idea to improve challenges even further | EA Forums - 12878168

Thank you.