p><strong><span>No relay candidates</span></strong></p><ul><li><p><span>Usually blocked UDP ports or missing relay port range. Open 49152–65535/udp and verify </span><code>external-ip</code><span>.</span></p></li></ul></li></ul><hr /><h2 id='minimal-values-you-actually-need-to-fill'><span>Minimal values you actually need to fill</span></h2><ul><li><p><span>In </span><strong><span>app config</span></strong><span>:</span></p><ul><li><p><code>serverinfo.app.url = &quot;https://app.example.com:2087&quot;</cod