Have read of the tips and comments made by others here in the Wikia, contains useful information which should hopefully get you past level 880! http://candycrush.wikia.com/wiki/Level_880
As long as you actively connected your game to either Facebook or Kingdom, your progress will be saved and synced to it. If you did, when you reconnect to that account in the game again, the progress from the point where it was last synced will come up.
As long as you actively connected your game to Facebook beforehand, your progress will be saved and synced to it. If you did, when you reconnect to that account in the game again, the progress from the point where it was last synced will come up. Do you appear on level 1700 when loading the game directly in Facebook?
If you get stuck on a level for a while, try watching videos of other players completing it as it might point you in the right direction: https://www.youtube.com/watch?v=RCm4OnKJqVY
Boosters don't transfer over, it's only Gold Bars and level progress that does. Its the opposite reason as to why you have to be connected online to use Gold Bars, boosters get stored on the device in order to make them available when playing without a connection. When I got a replacement phone I had to send my purchase…
Not sure what OS you have so put both iOS and Android down, try going through some of the suggestions made in the videos and see if it restores the connection: https://care.king.com/en/candy-crush-saga/lost-your-connection-to-facebook-android https://care.king.com/en/candy-crush-saga/lost-your-connection-to-facebook-ios
Try to see if you can restore the connection if you've already been using Facebook, try go through the suggestions given here: https://care.king.com/en/candy-crush-saga/lost-your-connection-to-facebook-android
Not sure what OS you have but give try giving the suggestions here a go: https://care.king.com/en/candy-crush-saga/loading-crashing-issues-ios https://care.king.com/en/candy-crush-saga/loading-crashing-issues-android