having trouble with admin email address

http://www.bisonx.my/my-account/lost-password/

I have 2 email address

Let’s say

aaa@gmail.com is old add
111@gmail.com is new add

when i try to click a “forgot password” link, i found the email address that the email was sent from aaa@gmail.com which i never use anymore

i tried to change the email add to 111@gmail.com at settings -> general -> email-address but even after changing it, it still use aaa@gmail.com

also if someone register as a new user, it use aaa@gmail.com as the sender

So question is, where actually is the location to update the email address from the site admin?

thanks