I just received my Deco M9 Plus and following the instructions to download the application and create a TP Link account. To my shocking surprise you do not offer  Two-Factor Authentication on my account. The security of my account is as strong as the password I set, which nowadays is considered very very weak. I have so many devices and smart home IOT connected this this account. 2FA is industry standards nowadays. Is not optional anymore and I cannot believe my eyes I am reading the forum moderators in other posts that this is not a feature which you are considering. 2020 for god's sake!