Two-step verification needs to be an option, not Mandatory.
Please let us CHOOSE if we want two step verification. Once we do a two step verification, that should be all we need to do while on that computer, EVER. Why make us do it EVERY TIME we want to check email?
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You can turn off the Two-step verification from your account, here’s how: https://help.yahoo.com/kb/SLN5013.html