I am writing a wordpress plugin that adds a paypal button to a website page. I use paypal api and use this example: https://developer.paypal.com/docs/checkout/standard/integrate/ And about 3 hours ago my button worked, and for the last few hours I get the message: "Things don't appear to be working at the moment. Please try again later." I looked at this link: https://www.paypal-status.com/api/sandbox and it says "All Sandbox Systems Operational". What is the problem?
