For the past week I cannot get on to Bubble Witch which I have played for over 1 year, what is wrong?

yes you can

try and update the app by google in to google play store select candy crush in your my apps see if there is a update available might be that

Unclear question. Please clarify, what kind of problem do you have downloading Facebook?

Try "force stop" in the settings/apps or delete and re-download the app

Unfortunately, Candy Crush is no longer supported on the iPad 1. This link will take you to a supported devices listing. It is calling for the iPad 2 or newer.
Candy Crush Saga Faq Mobile en King

Press the GAMES, in CLOUD mode.
On the top right side press STORE. SEARCH GAMES is at top in small letters, write " Bubble witch saga 2." You have several choices and they are FREE. My favorite word!

you might need to update your app or you might have a setting switched off that allows your identity to be available

Have you checked to see if there is a game forum online. I am not familiar with the game.

I never could connect on my android 2.3 phone, but then I read something online about needing to uninstall and re-install the facebook app on the phone... the facebook app came with my phone, and my phone would not let me uninstall it! I WENT TO THE GOOGLE PLAY STORE AND SEARCHED FACEBOOK. When it came up, it had the option to update my facebook app, so I updated it, after that CANDY CRUSH CONNECTED TO FACEBOOK NO PROBLEM... go figure... my phone has automatically updated the facebook app several times, but the candy crush app would never connect until I updated the app manually using the google play store... Bizare!