After you get the COC email and password data, follow these steps:

1. Login to the game Clash of Clans and go to Settings
2. Press the disconnect buttonwhich is to the right of the text supercell id
3. Press Enter button > Continue
4. Enter the email address provided by the seller
5. Login to the email address provided by the seller, check the inbox and open the email from supercell
6. Enter the 6 codes in the email and press continue
7. Press Confirm button to continue login > Press OK button
8. Make sure Clash of Clans is connected with Supercell ID
   
9. Bind the account with your Google Play account to prevent hackback
10. Secure emails you receive from sellers
11. If so, go back to itemku and complete the order

How to Secure Email

1. Open your Gmail application and add an account by select "add account" button
2. Then check the Google option and select "Next"
3. Enter the email sent by the seller then select "Next" and enter the password sent by the seller
4. Next, open your COC application and select settings at the bottom right, the button has a picture of a gear (gears)
5. Select the connected button so that you are disconnected from the old account, and press disconnected again so that COC is connected to the new account
6. Select which gmail account you want to play, check the account you just bought and select "Ok"
7. You will be asked to load a new account, select "Load", type "CONFIRM" and select "Okay"
8. Change your Gmail password, and activate 2-step verification in Gmail so that the account you bought is safe and can't be hacked again.
   
9. Open Gmail on the desktop and then click the Gear image in the upper right corner.
   
10. Click "Change password" to change the account password.
    
11. Click "Change password recovery option" to change the recovery email and cellphone number
    
12. Click "Other Google Account settings" > Select Sign-in & Security > Click 2-step Verification > enter phone number
13. Ask the seller to delete the Google Account from his cellphone, and ask for a screenshot as proof.
14. Next, to make sure your new account is still logged in on the seller's device, you can delete the device by following these steps:
15. Visit myaccount.google.com
16. Click Sign-in security/Login & security
17. Select menu Device activity & notifications/Activity & device notifications
18. In the Recently used devices column, select Review devices
19. Select the device you want to remove, then click Remove