Paypal sandbox doesn't work?

Question

After clicking paypal button it sends me to a page to login so I can pay the item. However, sandbox won't let me in. It says username or password is incorrect or something like that. But when I switch to a real paypal, I can get in. I don't know what I am missing here. Help pls...

Answer 1

You log in to PayPal sandbox using an email like john.smith@gmail.com. Then you create sellers and buyers, Paypal generates fake emails like john.sm343443.per@gmail.com with a password.
That's the one you have to use for checkout, not john.smith@gmail.com.

Answer 2

May sound dumb but do you have sandbox account?