Meta trader 4. 2-factor authentication

 
On my trading account, I tried to use the otp security key that can be set on the mobile app. But it doesn't work, anyone with my data can access my account and the account To which I have associated OTP, it is not requested either when I log in with the credentials to the account or when I open or close the app.How does the mt4 otp password work? Isn't it like a 2 Factor Authentication? I would like to make it so that only I can enter the account, and if someone wants to enter they are asked for the password That only I have