It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: https://www.sythe.org/members/xzshxuvqvih.1823384/

  1. <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="360"></head><body><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "www.sythe.org",cType: 'interactive',cRay: '94beaeb459969a65',cH: 'O8UCsipzH5Skw0FmpFoZeJL3SkLD8b4bg8_IOO4z.ws-1749283925-1.2.1.1-zfm_ePyDNMwH9NmffVfzw2Pxw_PKcclcwim5UBLBcefHmDE8io0kco11uUfbJ3Is',cUPMDTk: "\/members\/xzshxuvqvih.1823384\/?__cf_chl_tk=k4gejr_QAtaS0aP22EaLrOk4StGln0MckDlD15ghKY8-1749283925-1.0.1.1-Dk9sp2W.I.eLZ.OpxVKuSgyLQxgefW2FtGlS_V6TCVc",cFPWv: 'b',cITimeS: '1749283925',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/members\/xzshxuvqvih.1823384\/?__cf_chl_f_tk=k4gejr_QAtaS0aP22EaLrOk4StGln0MckDlD15ghKY8-1749283925-1.0.1.1-Dk9sp2W.I.eLZ.OpxVKuSgyLQxgefW2FtGlS_V6TCVc",md: "J95f8_6ixIs4Ro4.4tLdyCTSkztbUwoFRqlxGuqzkoM-1749283925-1.2.1.1-WMaZAb6qal845ilFuWuAjgZBUw9bn.STl99DG4CphivBC9qel1_4Y0HI0LAmTRYDEHn8JXysd7LrWFrFiRRzo8bjH8L0Zfbrnd7Qqw3fMRZzviKDoMEcu945Jh3uPvFMjAgs.df.VJ60SOMlnVfIUKFrEEcdIK2h.TqlnZPTHvYSh8qfzmMSq6sGBsDyqyHcU9gNzrWWBicRc8.Jpy6qYa9j.YG7kIDwmJyt4VTnvRHKBvV6Dl42n8Uu8PgyoYcmWYVdhuq__Dxmp0VzHfv8pm1ZnRqbW.cWbHdkFttWxyNw9.S273MJZ9xZc9H2i6PA8bI0MCW8hEnIvJ4yfOIF3kn_oPryHmtrHfieC_FmZxeNPaOt1uNYDv.UsH88W.uHaR0NQOPr.kxMSaMwlMb_Hf8HRQFDe0OWsnvCsLtQ4Qx8EVrdItOYcXcqNzUcN8k1Q45b6H3wXcAvVc4rRGEqOSryihTfCzANRe5zUYDwU7B4qcBaqP4l0n6H9pv3VetoBgdJvOFuy5jdiIHXdc5CZhpJYMaTaQIvC6q.C8mLCh4jo_.GbiVaZGwlt8Mio4v5_1.ZV1uxIWasf4rS9Ij.F32gsXTHr1.ldDgVtfcsup_b9LsAUk33MvuINFPmKy0qE9GMmzd1TKdGzNOcFCZuM0rO.FXv7S90WnjfZZNxoh9SOQAqcs7e6t0f0hm00feePPvi8MSgl9eBwQjfgzu1lfvXfByeGQYNqsJM6v2uNOdRjlk4rHUq3QemQW0.sWyU.no0ZpRLl.E9LXKywytFhc9piiGFL7.RWA58x7hn85UjY5wix70gZi4Qqu2aI68GNM50tYhcyBpKc0kXb5b9kyDGG7mW_kh8BtkjemZOKcyN0Yz5wrfVV5la7Cwz.u3_lI97Pu.FZXGw2067JjF2RNvZp5cktd0laFDGUL9QsIo",mdrd: "db1Bux215EfZVaF4prVIh.H_kbTzgYnf4CKYs0wGy90-1749283925-1.2.1.1-TvwekpOlne9IYxDNjT2K5cyF6FjOPnKB0QeDXYFjbolNisGK5sWwB1.avZnDn08s.KGU2j8bcfX3lj4rBWQ44CH5S4cKBW_8KvllYxUZmYqEHzNRACNBTQOIjMG4o0ZQDWAzO8dyghK2MSrEUkjJtRWHMwvNSRJtYf2iz7vBiAvvrk7x9uQIE7VGF28Yy6YBJLN50apNeRuO1sedkJednaiCJ65U7EfnT7e6nOVyaDbmLXUpvcxLJCopQVUtqOWiDaGFwz7iUYiJz0CtoluCkkS01Ms9i0P6bRCkFU_ZR.EMrXyPyCCNtaBR0JRzj9L9EZCWj6XUexlqqwHptxmO.Xd8aIjmGS6Rdald6RnWCErg42MI8ykUfvB8DIHMEguOlXPIeNibk08ARaEIFHG.ml5IteG4yJn4qHnD6tJ6SRZ_OOmbJVuvk0y6Dm39.L951o3AwvoIbHjI0ldimBKl_OKZa6OWfQDFninCUSZexMpFq8sOZwneRXkuWUoWJV8HGG7Qn6m2_w.g9ZHZ5oAQPWA7retCVvKQzRT0y3n9ikFTyzpafRfGJYkNr4uEKT5hXw61nt6Q8_U3ZOkF66Mh2Hf1omXJxZOVAbfLW4wqUOtavHmJHBeGu5Sj2XbaaemLlhHg1z3j4LzI6qXFL3HVuyPJt3y3oiEUa9ez4RXEknFbL0BsPI2C3IgDPYiuaF1kz02Qx4UahLWYTPeDLUaH1g7nR1A14GNO3KI4LIre8J7qK1EWtpu.u7cWnx.lda7xBWj6jh3kBdbQ_bolx1JhQk.cSUeuhSpJ5NKaiYaO2l.uZ1Jf.x4G.xrLYbQCLJJp.FQGBVLzAWiWVdz3MwHLsVYSnrtEbH.JM7piup.9vv1NGHxqmj9WV.8..j2p9RHFnmHZaLmZ6SBbLP2yFzKjiH76a9xJhoDZnenUEG7WWSqGEWhv0nAxne7DbqR5pHOokNfzydOkiWCNMiNTRlvt1jxTxfINFHNDf0vHLuKMQM89bEH_PBWgIc2Hh7Nx2XjQh1LWDD_yNCntx3q1eHFIvOzAwm9zob7YaKDxPe0ulpmWahmtDodENNk6mY3oRxnUxvIM_uuuCU6GbCuSgUUbx51rwr0_U4CxaOhFEFeRSqElWXQbFw6AnfpiQHkuJ60uCMM7DO7JWmHg3wmOL7NlhtnWqQgLzoj1BbblNUJsvDM.lMDPh8r6Gs9NAOpxaskj_iK1gFrc4taBdlx3PEcQAnyAhsx2fo.dD.OSYUJPacuACwdAnKARlkw65W8LYpvqaR9yw.VQNTQTJk36MnXpkqWN0HZKu0YF.O3ktXyrn5unpCXhDMZHzhlA55yoe54EPrSOajgMLX6vlly6SMlnZTwtOTQeBjarA7diC4QVBVEhGG4drlJ9nsZbjfxQFaFAFX8faYZXKaT2xiSn04ziAPbPyqEvinyXcrJ7iTe9L_5mD3ppVcS3QXTz5.1qYsquy3puvSukvogTScAt.eNQl4kt7c0Le.XDu4Vdv_Mzws4r9fAqwi8EweE3hdb8SHYGvkB4xZEMYz_2IV0HebsD6RHRo1Vc1hv0NbTkkm7OlyuPvcyEI7ArK2WbjMeCg7AschXZa7DbtNZ7J4gpc2FYPUUzZVjaYalgXLxcRkzjnMi3g2mOd7VhGuWkRRj_0Mrcx1wGt.Kl9sE40Pzk1hW8FIclUjeiZU4KVPAF0YGkxN64p_bb7pKSMo1D_LTjNyG7rQBW2NAw.pwTVBM2kGBYre45kGefNCupuUvkXGcHfj5_3t0MmqZYd.tvtehtxHx5rKxTOvCl1C.af0sAzDRUwVkOMh5XHcCFgvFAkoheQQWnFawlcudB1oyV0jP9HXbtk6yrZPZcZtmSL8aR9j_HrQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=94beaeb459969a65';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/members\/xzshxuvqvih.1823384\/?__cf_chl_rt_tk=k4gejr_QAtaS0aP22EaLrOk4StGln0MckDlD15ghKY8-1749283925-1.0.1.1-Dk9sp2W.I.eLZ.OpxVKuSgyLQxgefW2FtGlS_V6TCVc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda