The kids forgot the email and password they had set for it. now was needing to know how to reset the hole thing email password and all.

That sounds like the Google FRP. Try the hacks in the link.

https://www.google.com/search?q=resetting+contixo+kids+tablet%2C+bypass++email+previously+associated+with+the+device

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Recover or Reset Forgotten Apple ID or Password on iPhone & iPad

This is all done on an iOS device and is often the simplest way to log back into an Apple account:

1. Open the Settings app and scroll down and tap on "iCloud"
2. Tap on the email address at the very top of the iCloud settings screen
3. Tap on the blue text underneath the password entry that says "Forgot Apple ID or Password?" where you'll have two choices:
   • If you know your Apple ID and don't remember the password, type in your email address and click "Next" to start the reset process
   • If you don't know your Apple ID, tap on "Forgot your Apple ID?" and fill out your full name and email address to recover the Apple ID login (yes, you can then do the password reset after you have the Apple ID)
4. Answer the security questions pertaining to that Apple ID, and follow the onscreen directions to complete the process

At this point you should be good to go, you can reset the password for the account and then login as usual.

From Apple:

If you forgot your Apple ID password If you're having issues signing in with your Apple ID password, use these steps to reset it and regain access to your account.
Your Apple ID is the account you use for everything you do with Apple, like shopping the iTunes Store, signing in to iCloud, buying an app, and more. To reset your password, you'll need to know the email address for your Apple ID. If you're not sure which email address it is, there are a few ways you can find your Apple ID.
Reset your password
After you reset your password
Get more help Reset your password You can reset your password when you go to your Apple ID account page and click Forgot Apple ID or password. Enter your Apple ID, then click Next.
After you enter your Apple ID, there are a few ways you can change your password:

Answer your security questions

If you know the answers to your security questions, select "Answer security questions" and follow the steps to reset your password.

Use email authentication

If you select "Get an email," we'll send an email to your primary or rescue email address that you can use to reset your password. Didn't get the email?

If you use two-step verification

If you set up two-step verification, you can use it to change your password. You just need a recovery key and a trusted device. Follow these steps:

1. Enter your Recovery Key.

1. Choose a trusted device. We'll send your device a verification code.
2. Enter the verification code.
3. Set a new password and select Reset Password.

If you permanently lost your recovery key or access to your trusted device, you can't change your password.

If you use two-factor authentication

If you have two-factor authentication, you can reset or change your password from your trusted iPhone, iPad, or iPod touch when you follow these steps:

1. Go to Settings > iCloud.
2. Tap your name.
3. Tap Password & Security.
4. Tap Change Password.
5. Enter a new password.

These steps will work only from a trusted device with a device passcode enabled. If you don't have access to a trusted device, you can reset your password when you follow these steps:

1. Go to iforgot.apple.com and enter your Apple ID.
2. Enter your trusted phone number and click Continue.
3. Enter the verification code that we send to your trusted phone number.
4. Provide any additional account information requested.
5. Choose your new password.

If you can't sign in, reset your password, or receive verification codes, you can request account recovery to regain access to your account. Account recovery will take a few days, depending on what account information you can give. After you reset your password After you reset your password, you'll be prompted to sign in again with your new password. You also might need to update your password in Apple services and on your devices. Get more help If you're still having issues signing in with your Apple ID and password, make sure that you're entering the correct Apple ID. In most cases, your Apple ID is also the primary email address of your Apple ID account. If these steps didn't help you change your password, contact Apple Support.Last Modified: Feb 19, 2016

try go to settings password reset

1. Go to My Apple ID and select "Reset your password."
2. Enter your Apple ID, then select Next. If you don't remember it, choose Forgot your Apple ID.
3. After you enter your Apple ID, there are three ways you can reset your password. Choose an option below:

• Answer your security questions. Use these steps if you know the answers to your security questions.

• Use email authentication. We'll send you an email that you can use to reset your password.

• Use two-step verification. If you set up two-step verification, you can use it to reset your password. You just need your recovery key and a trusted device.

1. Enter wrong pattern 5 times and wait for 30 seconds.
2. Select "Forgot pattern" and enter your email account username and password.
3. Make sure you use the same account that was used to activate the device and double check the password by logging in to that email account in a browser.
4. If you don't have access to the original email account, you will need to do a hard reset and loose your settings and apps on the devcice. The data on the memory card will not be wiped though.
Note: if you can't remember your email password, you will have to visit the email service support page to get it reset.
also, see here...
http://www.androidtablets.net/forum/android-tablet-usage-tips-tricks/6280-forgot-your-unlock-pattern.html
or here... http://mytabletguru.com/forgot-password-pattern-unlock-of-android-tablet/

Nextbook Android Tablet Hard Reset

It seams parents like to set a password the and finally forget it ,don't worry the password unlocker will help. Top 4 Free Methods to Reset Windows Password

What email-provider was the email sent to? Maybe you can recover the account password with another email-adress, that was put in for recovery? For example: in Gmail you can put an recovery email-adress or a phone number and get your password reset that way.
Good luck!