Email problem?

[HUNTER1]

My email says my username/password is incorrect and logged in to the computer to check email and said someone tried to hack my emails and required a new password. I set a new password on my computer and works but when I set up the new password on my iPhone, it's still saying incorrect username/password, same thing on my iPad. What can I do to fix this? thanks

 

[xrayeyes]

Is it Gmail?