POP3 Email doesn't work for other Gmail

Unfortunately, I had to change my gmail password for a secondary email. After I did this, obviously POP3 didn't work because the credentials changed. I was having an AUTH error that looked like this:
 "Server denied POP3 access for the given username and password.
        Server returned error: [AUTH] Web login required: https://support.google.com/mail/bin/answer.py?answer=78754"

This is what worked for me:


https://productforums.google.com/forum/#!topic/gmail/r3Nq_MLgwl8

1- Sign into the old Gmail account first ( the one you are trying to fetch mail from )

2 -  you may need to Enable less-secure Apps for that account >> https://www.google.com/settings/security/lesssecureapps

3 - Then go here: https://accounts.google.com/b/0/DisplayUnlockCaptcha

Then sign in to the new Gmail account ( the one you are trying to fetch mail into )  and set up Mailfetcher within the 10 minute window you are allowed.

 if the above suggestion  doesnt work , there are more options listed here https://support.google.com/mail/answer/78754 for example changing the password on the account you want to fetch FROM

NOTE if you use 2-step on the account you want to fetch FROM then you need to create an application specific password  >> https://support.google.com/accounts/answer/185833?hl=en