I have logged in yahoomail app so many time , It is not opened.
I have passed the following method in logging yahoomail app eventhough it is shown "something went wrong try it after sometimes".
1. Recaptuva - it is very bore and fed-up method
2.password
3.stay verified authentication code.
Please do the needful.

I suggest you the following method to easy sign up account and avoid hackers.
1. Code send to verified email address.
2.code send to verified phone number
3.code send to authenticater

Regards
R. Balaji