MacBook music app not playing songs after changing Region/Country settings

Hey everybody

I moved from France to the US and I recently changed my region on my icloud account. Everything works like a charge on most of my devices except on my macbook pro. When I try to listen to something new, only available on the US store i get this message.

"You are signed in with an Apple ID that is not valid for use in the French Store. You may only purchase music from the U.S. Store with this Apple ID."

Everywhere on my account (AppStore, online iCloud, iPhone AppleID, iPhone settings), even in Music Settings on my macbook but it still doesn't want to play US regional numbers.

Can somebody help me please

thanks,

Franck