The splynx server return this : "Exception: Got Http response code 401 when accessing https://api.paypal.com/v1/oauth2/token. string(77) “{“error”:“invalid_client”,“error_description”:“Client Authentication failed”}”
“Connect to Splynx server via SSH and edit file params.php located at /var/www/splynx/addons/splynx-paypal/config.
‘splynx_url’ => ‘http://yoursplynxURL/’
‘clientId’ => ‘YOURPAYPALID’
‘clientSecret’ => ‘YOURPAYPALSECRET’”