Can no longer login to email on iphone

[Didav]

I change my password on my TalkTalk account and no longer receive emails on my iPhone. When I try to login on we mail, it say sthe password is incorrect?????   Why?

I am an old Tiscali customer with a tiscali email address if that helps. 

What do I need to do to access my emails? 

[Gliwmaeden2]

If you changed the email password, have you removed the address from an app first before trying to access emails on your phone, @Didav?

Whenever we change a password, the email address will need to be removed then set up again on a phone app.