Just assume my device (Galaxy A50 phone) is lost or stolen, and I want to use the "find my device" option from my Samsung Account, by logging in to the account on my PC.  I won't be able to log into my Samsung account on my PC however, because I have enabled dual factor authentication, and this requires my device to be avaiiable. 

In other words, something's broken in the design of this account.  If you have lost your phone and want to access your Samsung account in order to locate your phone, then you can't login into