Hi! Here's a clarification regarding whether it affects you or not.
RAID will dissapear only from the Facebook Cloud platform, the possibility to login into your account on other platforms (including mobile devices and Plarium Play) via Facebook remains unchanged.
If you have created your account on Facebook Cloud, please log in to your account on another platform (a mobile device or Plarium Play) via Facebook and you'll save your progress.
If your account have been created not on Facebook Cloud, you don't need to worry, as this change will not affect you.