Setup 4 of 4
Addingwell
Addingwell serves the container from your subdomain and also hides the file names and paths, so ad blockers can't pattern-match on them.
Tag manager script
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What this tests. Addingwell sits on top of a server-side GTM container at brand.fulcos.com and rewrites the paths and file names so they don't match ad-blocker patterns.
Requests come in through an obfuscated path (here, brand.fulcos.com/no6lapt9q5xxszw.js?awl=…), not the default gtm.js URL. That's usually enough to get past both domain-level and file-name block rules — which is why this setup tends to work end-to-end even when the other three are blocked.