I keep getting message can't connect an can't get boosters

Stormy-4

Candy crush saga: keep getting message you are not connected. Can't connect to Facebook even though it is there. Do not get rewards

Crazy Cat Lad

First make sure that your iOS is at least iOS 8 or later version and that you have the latest update of the game app installed from App Store: http://to.king.com/4zGs

Then try the following steps to get the game Facebook connected: 

-Disconnect the game from Facebook under Start menu > Settings > Cogwheel > Log out 

-Delete the Facebook app from the device

-Close all tabs in Safari and clear the browser cache by going to Settings > Safari > Clear History and Website Data

-Turn off the device and wait about 30 seconds to clear the cache

-Turn on the device again

-Open Safari and log in to your Facebook account through the browser

-Open the game and reconnect it to Facebook

-Once you're connected you can reinstall the Facebook app and continue using it if you wish

If the game still is not connecting, please try the steps above again, but delete both the Facebook app and the game app in the second step followed by clearing Safari cache etc. Please note that Boosters and Lives will be lost when you delete the game, as well game progress that yet haven’t been saved on Facebook or in Kingdom.

I hope this helps!