I have tried to get into my iTunes account have changed password twice still cannot get in

You can use forgot password option in the IPad where your twitter account is not working properly.
Then reset your password and login to twitter using the same IPad which was having problem.
Getting started with Twitter for iPad
The last section of this link provides you with information on resetting your password.
If in case the problem persists then it must be an Apple problem.

Try to connect the iTunes store via this link: iTunes Account Billing Apple Support
Under managing your account, you find recover a forgotten iTunes store account name. Click there and they will help you.

You don't need to know your password for the iPad. As long as you know the password for your iTunes account, you used to setup the account on the iPad for. Connect the iPad with the computer and open iTunes and give in the password for the iTunes account. Apple will unlock the iPad and you can setup a new pass code for the iPad.
When you forgot your iTunes password, you have to contact Apple and prove you are the legal owner of the account.
Use this link to find more support for that:
Apple ID Support

You may have to go to iTunes on your computer and reset your password there. Then enter your new password on the iPad after you have reset that password. Also, you can have a different iCloud password and account than your iTunes password and account, if you have set up your iPad that way.

iOS 8 is a failure on apple's part. They screwed up something major and now anyone who has ios8 basiclly has a fancy paper weight until apple fixes it.

Change your apple id that way the people who took the card can't use it they would need your apple id to do so

No password, no access. You seem to need to 'Restore iPad' through iTunes (connect iPad to computer and open iTunes, you need internet connection to download system). All data will be lost through a restore, unless you back up (but without password you probably don't access the data anyway...).

First try to reset the iPad, by pressing both the home button and the on / off button, till the apple logo comes on the screen. Then try again. You should have a password for you Apple account, because that will be asked. If you don't have an account name for the device not worth trying, because it will be blocked anyway.
If this does not work, why not try one in this link?

How to Reset Forgotten Password for an iOS Device

You have to manage your iTunes account in iTunes. Follow these instructions to change account information.

You can change your Apple ID name, password, or billing information at any time.

1. Choose Store > View My Apple ID, and sign in.
   

2. Click Edit.
   

3. Make your changes, and click Done.
   

Your changes take effect immediately.

If you also use your Apple ID in other apps, you don't need to update your information in those apps. The changes you make in iTunes apply to all apps in which you use your Apple ID.

If you have an AOL account, changes you make in iTunes don't affect your AOL account on the AOL service. For example, if you change your password in iTunes, the password you use to log in to the AOL service doesn't change.

Factory reset the iPad, you will lose all of the data on it though. In theory, you should be able to connect it to a computer first and do a backup in iTunes but this will depend on the security settings on the iPad. Regardless, your purchases should be linked to the iTunes account that was being used so after a factory reset you should be able to reload your purchases.