I decided to use Yahoo two-step verification.
I signed up for two-step ID. Yahoo gave a notify your Iphone? option. But it never notified me. Then there was at the bottom in blue "I need more options". After clicking that for the last month or two it allowed me to id my phone and Yahoo sent me the code. Today the additional options is replaced with go to help. I was finally given the option of a qr code. In trying that it failed. So I was able to use my backup (non-Yahoo) email go in and "upgraded" my account to no longer use two-step id!
1439th
ranked
Ernest Warner
shared this idea