How to unbind Reyee devices from the old account and then add it to new account？

Method 1:
Factory reset Reyee devices through press the reset button more than 5 seconds, it will reboot, and factory reset and then it will be removed from the old account.
Notice: Need Reyee devices can access Cloud, so it will be removed.
Method 2:

• Let Reyee device lost network connection.
  
• Remove it from the previous account
  
• Add it to new account network
  
• Let Reyee device re-connect with network