PayPal standard API

Hi

I am using "HikaShop Paypal payment plugin". I have given the sandbox E-mail id and sandbox URL
But i am getting the message "Please login to use the Paypal Sandbox features" (Please see the attached screen shot of the paypal message)
Where i have to enter the API username and password , etc...?

Thanks

Hi,

I think that you'll probably find your answer there :

You should already be logged in to the sandbox BEFORE testing your transactions and that way you will directly see the normal paypal interface after the checkout.