Hi, there must be some kind of error then, can you please send me the link to that page. Do you have a latest version of EasyAppointments plugin?   Best regards, Nikola

Hi Nikola, Thanks for your quick response. I updated the plugin to latest version and PayPal button is appearing now. However, the popup is opening and closing immediately without payment. My URL is http://d4medicals.com/appointment/ Thanks

Hi,   looks like your token is no good. Here is the message from your site :  

Request to post https://www.sandbox.paypal.com/v1/oauth2/token failed with 401 error

{
    "error": "invalid_client",
    "error_description": "Client Authentication failed"
}

  you need to provide valid token.   Best regards, Nikola

Hi Nikola, I am using the token provided by PayPal. I regenerated the token also. It's not working for me. May be I am searching token in wrong place. Could you please let me know where can I get the PayPal token in my PayPal account. Thanks

Hi, you need to create a App inside PayPal. You can do it here : https://developer.paypal.com/developer/applications/ . There you have section called REST API apps and Create App button. Just follow the instruction there. After that copy/paste those tokens. Best regards, Nikola