I logged out of two yahoo accounts on 2 different phones as they were linked to each other and they tried logging back into both of them but to no avail couldn't get back in.
Logging in online I had no problem but logging in through the Yahoo app on a Samsung Galaxy S7 could not get it to work on two phones that had the same account.
Erased all the catch and all the data on each of those apps, didn't seem to help.
This is the error message I kept on getting as seen in the picture below.
Thanks in advance.