I can't even sign in to switch off this stupid feature.  I want a choice about whether I have to use this stupid method to sign in to my bookwork.  I've got enough work to do without this making my life more complicated in a completely unnecessary way.  Don't make us fight for the ability to disable this feature, please, if we want to use it, let  us know that we have that option and those of us who want it can switch it on, those of us who don't can leave it off.  Please make it simple as even now I can't sign into my account because I don't get texts and I don't get emails.  Even if there's something wrong at my end, this verification is flawed!