Anonymous Pens can't be embedded.
Edit on CodePen
{"__browser":{"device":"unknown_device","mobile":false,"name":"unknown browser","platform":"unknown_platform","version":"0"},"__constants":{},"__CPDATA":{"domain_iframe":"https://cdpn.io","environment":"production","host":"codepen.io","iframe_allow":"accelerometer; ambient-light-sensor; camera; display-capture; encrypted-media; geolocation; gyroscope; microphone; midi; payment; vr","iframe_sandbox":"allow-forms allow-modals allow-pointer-lock allow-popups allow-same-origin allow-scripts allow-top-navigation-by-user-activation allow-downloads allow-presentation"},"__graphql":{"data":{"data":null,"errors":[{"message":"Cannot return null for non-nullable field Query.sessionUser"}]},"url":"https://codepen.io/graphql","api":"cprails","cpedata":{"action":"show","controller":"embed"}},"__pay_stripe_public_key":"pk_live_2GndomDfiklqpSNQn8FrGuwZSMIMzha7DkLJqlYe7IR0ihKAlKdiHg68JJc5eVPt68rzAjzAAVXcUwjySHRCsgjQQ00gtRBUFNH","__pay_braintree_env":"production","__boomboom":{"serve_url":"https://cdpn.io/cpe/boomboom","store_url":"https://codepen.io/cpe/boomboom/store"},"__pageType":"embed","__item":"{\"editor_settings\":{\"auto_run\":true,\"auto_save\":true,\"format_on_save\":false,\"indent_with\":\"spaces\",\"tab_size\":2,\"id\":\"VoDkNZ\",\"autocomplete\":false,\"code_folding\":true,\"css_pre_processor\":\"none\",\"css_prefix\":\"neither\",\"css_starter\":\"neither\",\"emmet_active\":true,\"font_size\":14,\"font_type\":\"system\",\"html_pre_processor\":\"none\",\"js_pre_processor\":\"none\",\"key_bindings\":\"normal\",\"line_numbers\":true,\"line_wrapping\":true,\"match_brackets\":true,\"snippets\":{\"markupSnippets\":{},\"stylesheetSnippets\":{}},\"theme\":\"twilight\"},\"hashid\":\"MwgNVx\",\"itemType\":\"pen\",\"resources\":[],\"tags\":[],\"id\":3593266,\"user_id\":1,\"html\":\"<div class=\\\"clearfix\\\"> \\n <article class=\\\"main-column\\\">\\n <header class=\\\"article-header clearfix\\\">\\n <h1>\\n Introduction</h1>\\n </header>\\n\\n <div class=\\\"subtle-wrap\\\">\\n <div class=\\\"article-body markdown\\\">\\n <div class=\\\"gsg-nav\\\">\\n<ol>\\n<li><a href=\\\"/hc/en-us/articles/204430534-Introduction\\\">Introduction</a></li>\\n<li><a href=\\\"/hc/en-us/articles/204430724-Ticket-Basics\\\">Ticket Basics</a></li>\\n<li><a href=\\\"/hc/en-us/articles/203691486\\\">Viewing & Organizing</a></li>\\n<li><a href=\\\"/hc/en-us/articles/203921223\\\">Solving Tickets</a></li>\\n<li><a href=\\\"/hc/en-us/articles/203691496\\\">Self-Service</a></li>\\n<li><a href=\\\"/hc/en-us/articles/203691506\\\">Business Rules</a></li>\\n<li><a href=\\\"/hc/en-us/articles/204430724-Ticket-Basics\\\">Next Steps</a></li>\\n</ol>\\n</div>\\n<div id=\\\"l0-s01\\\" class=\\\"lesson default\\\">\\n<div class=\\\"lesson-nav\\\"> Introduction\\n<div class=\\\"buttons\\\"><a href=\\\"/hc/en-us/articles/204430724-Ticket-Basics\\\">Next</a></div>\\n</div>\\n<div class=\\\"full-lesson\\\">\\n\\n</div>\\n</div>\\n</div>\\n</div>\\n \\n </article>\\n\\n <aside class=\\\"article-sidebar side-column\\\">\\n <section class=\\\"recent-articles\\\">\\n <h3>Recently viewed articles</h3>\\n </section>\\n \\n <section class=\\\"related-articles\\\">\\n <h3>Related articles</h3>\\n \\n </ul>\\n </section>\\n\\n\\n </aside>\\n</div>\",\"css\":\"\",\"js\":\"\",\"html_pre_processor\":\"none\",\"css_pre_processor\":\"none\",\"js_pre_processor\":\"none\",\"html_classes\":\"\",\"css_starter\":\"neither\",\"js_library\":\"\",\"created_at\":\"2015-04-21T09:13:08.000Z\",\"updated_at\":\"2015-04-21T09:13:08.000Z\",\"title\":\"\",\"description\":\"\",\"slug_hash\":\"MwgNVx\",\"head\":\"\",\"private\":false,\"has_animation\":false,\"team_id\":0,\"css_prefix\":\"neither\",\"template\":false,\"parent_id\":null,\"comments_count\":0,\"custom_screenshot_filename\":null,\"loves_count\":0,\"pick\":false,\"popularity_score\":0,\"views_count\":0,\"pick_visible_at\":\"2022-11-08T22:42:57.485Z\",\"cpid\":null,\"pen_hash\":null}","__jwt":"eyJhbGciOiJIUzI1NiJ9.eyJjbGFpbXMiOnsidXNlcl9pZCI6MX0sImV4cCI6MTY4MDQwODE4MX0.27ZXYzP1UK08KVppYP5bfCXJ6iA1Z2GRbSKmCqECdzU","__processorsMap":{"autoprefixer":"autoprefixer-10","babel":"babel-7","coffeescript":"coffeescript-2","format-1":"format-1","flutter":"flutter-1","haml":"haml-4","less":"less-3","lint-1":"lint-1","livescript":"livescript-1","markdown":"markdown-11","postcss":"postcss-7","pug":"pug-2","sass":"sass-1","scss":"sass-1","sass-ruby-3":"sass-ruby-3","sass-ruby-compass-3":"sass-ruby-compass-3","slim":"slim-3","stylus":"stylus-0","typescript":"typescript-4","vue":"vue-2","vue3":"vue-3"},"__favicon_mask_icon":"https://cpwebassets.codepen.io/assets/favicon/logo-pin-b4b4269c16397ad2f0f7a01bcdf513a1994f4c94b8af2f191c09eb0d601762b1.svg","__favicon_shortcut_icon":"https://cpwebassets.codepen.io/assets/favicon/favicon-aec34940fbc1a6e787974dcd360f2c6b63348d4b1f4e06c77743096d55480f33.ico","__path_to_iframe_console_runner":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeConsoleRunner-6bce046e7128ddf9391ccf7acbecbf7ce0cbd7b6defbeb2e217a867f51485d25.js","__path_to_iframe_refresh_css":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRefreshCSS-44fe83e49b63affec96918c9af88c0d80b209a862cf87ac46bc933074b8c557d.js","__path_to_iframe_runtime_errors":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRuntimeErrors-4f205f2c14e769b448bcf477de2938c681660d5038bc464e3700256713ebe261.js","__path_to_processor_worker":"https://cpwebassets.codepen.io/assets/packs/router.js","__path_to_stop_execution_on_timeout":"https://cpwebassets.codepen.io/assets/common/stopExecutionOnTimeout-2c7831bb44f98c1391d6a4ffda0e1fd302503391ca806e7fcc7b9b87197aec26.js","__pen_normalize_css_url":"https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css","__pen_prefix_free_url":"https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js","__pen_reset_css_url":"https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css"}