Hello, you can bind your google account to an Oasis account through your user center, found linked below. If this is not an option for you, you c*so set a security email through the same place, and use this to login.

https://www.oasgames.com/?a=newucenter&lang=en&source=narutoenosite

been having the same issues!! then when i come across the security questions it says they are wrong? been very frustrated with with this.