<h1>Mix Upload Issues</h1><p>If your mix upload is failing, check the following:</p><ul><li><strong>File Size:</strong> Ensure the file does not exceed your plan's limit (100MB for Lite, 250MB for Pro, 500MB for Platinum).</li><li><strong>File Format:</strong> Ensure the file is a standard MP3, WAV, or M4A. We do not support lossless FLAC or proprietary DAW project files.</li><li><strong>Browser Issues:</strong> Try clearing your browser cache or uploading from an incognito window. Uploads can sometimes time out on slow connections.</li></ul>