The Qoo10 app is poorly designed.
I cannot log in due to forgotten of password. The app does not have such a simple password reset option which is working.
When I finally managed to guess my password and logged in, there is not a way for me to delete my account.
To unsubscribe the email messages sent by them needed to log into the account which could not be done by me due to forgotten of password earlier. So I was stuck for a few days.
In summary, a stupid app. Don't use it.