Feed download blocked by access controls

TikTok cannot reach the scheduled feed URL because the host requires auth, blocks the TikTok IP range, or returns 403. Catalog stops refreshing.

TikTok Shop / TikTok Catalog Manager validates landing-page URLs for crawlability, format, and uniqueness. Common triggers: invalid characters, relative paths, missing protocol, redirect chains, or hostnames that don't resolve.

1. Test the URL in a private/incognito browser — if it doesn't load instantly, the channel can't load it either.
2. Confirm protocol is `http://` or `https://`. Most channels prefer HTTPS.
3. URL-encode special characters (spaces → %20, ampersands → %26).
4. Eliminate redirect chains — most channels allow max 2 redirects.
5. Remove user-specific tracking parameters from product URLs.

• Hash fragments (#section) — typically stripped, leaving the rest valid only if structurally OK
• WAF rules blocking the channel's crawler — whitelist by IP range or user-agent