My 2FA is not working.
For about a week now, my 2FA isn't working.
Whenever I sign-in, I get the notification sent to my phone and I enter the correct code in my browser, but I still get an "invalid password" error.
I've checked all the obvious options, I don't use any kind of auto complete or any stored credentials. I can sign in with an alternate method, just not with the Yahoo app on my phone.

Hi there,
Could you please message us on Twitter at @YahooCare or on Facebook at Yahoo Customer Care? We'd like to look more into the issue you're experiencing. In case you do not have a social media account, we are also available at: help.yahoo.com
Looking forward to your reply!
Thank you,
Yahoo Mail team
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Riccardo Caroselli commented
I have this issue too. I put my phone number into the form and then I get no sms so I am locked out of my account.
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Joao Gomes commented
Hello. I don't use social media, so I'll just update this here.
Today (22/02/2022) I couldn't use 2FA again. Looks like the error is only when there are two letter blocks in the authentication code. When I get an authentication code with just one letter block it works just fine. Today I tride XXXX<space>XXXX and XXXX<nospace>XXXX and got an error on both tries. Caps lock was off, and I entered the correct code. When this happens, using another way of logging in works fine.