two step verification is worthless if YAHOO cannot sent the text with the code. removed it from my account until you can get it working
get two step verification text code working
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Phillip Moseley commented
I, too, turned off the two-step verification for the same reasons. My next step will be to say goodbye to Yahoo and use one of the new, independent, mail services. What gets me is how Yahoo sells our personal information to the world and then puts a system to protect us from the world.