Edit file File name : one-click-upgrade.js Content :var oneClickUpgradeRemoteEndpoint = "https://connect.duplicator.com/upgrade-free-to-pro"; jQuery(document).ready(function ($) { if ($('#dup-settings-upgrade-license-key').length) { function addErrorMessage(text) { let msg = $('<div class="notice notice-error is-dismissible">' + '<p>' + text + '</p>' + '<button type="button" class="notice-dismiss">' + '<span class="screen-reader-text"></span>' + '</button>' + '</div>' ); msg.insertAfter( ".dup-settings-pages > h1" ); msg.find('.notice-dismiss').on('click', function (event) { event.stopPropagation(); msg.remove(); }); } // Client-side redirect to oneClickUpgradeRemoteEndpoint function redirectToRemoteEndpoint(data) { if (data["success"] != true) { addErrorMessage(data["error_msg"]); return; } $("#redirect-to-remote-upgrade-endpoint").attr("action", oneClickUpgradeRemoteEndpoint); $("#form-oth").attr("value", data["oth"]); $("#form-key").attr("value", data["license_key"]); $("#form-version").attr("value", data["version"]); $("#form-redirect").attr("value", data["redirect"]); $("#form-endpoint").attr("value", data["endpoint"]); $("#form-siteurl").attr("value", data["siteurl"]); $("#form-homeurl").attr("value", data["homeurl"]); $("#form-file").attr("value", data["file"]); $("#redirect-to-remote-upgrade-endpoint").submit(); } $('#dup-settings-connect-btn').on('click', function (event) { event.stopPropagation(); var license_key = $('#dup-settings-upgrade-license-key').eq(0).val(); jQuery.ajax({ type: "POST", url: dup_one_click_upgrade_script_data.ajaxurl, dataType: "json", data: { action: 'duplicator_one_click_upgrade_prepare', nonce: dup_one_click_upgrade_script_data.nonce_one_click_upgrade, license_key: license_key }, success: function (result, textStatus, jqXHR) { if (result.success) { redirectToRemoteEndpoint(result.data.funcData); } else { addErrorMessage(result.data.message); } }, error: function (result, textStatus, error) { console.log(result); } }); }); } }); Save