Running multiple Facebook ad accounts requires more than new emails. Meta links devices via fingerprint + IP + behavior.

Recommended stack

  1. BeastBrowser profile per ad account
  2. Residential or mobile proxy matching account geography
  3. Unique payment method and Business Manager where possible
  4. Cookie warming before spending budget

Common ban triggers

Shared Canvas fingerprint, WebRTC real IP leak, timezone mismatch with proxy, and launching too many cold accounts from one machine.

BeastBrowser blocks WebRTC leaks and randomizes fingerprints per profile. Use Synchronizer only when workflows truly need mirrored actions.