Paypal Sandbox API No Transaction
<p>I'm trying to test my payment script with PayPal. It used to work 2 days ago but now, When I try to pay with one sandbox account to another, there is no transaction history between them. However, I'm getting redirected to success page URL saying that the transaction was successful after paying with the test account.</p>

<p>This was working 2 days ago and now it suddenly stopped showing transactions. There is no transaction history and so no IPN being issued by the PayPal. Is there a problem in their end or something wrong in my end ?</p>