Facebook Verification Code Not Received, Forced Redirect to WhatsApp? 2026 Guide to Meta Accounts Center and BM Re-verification

Analyzes three typical dilemmas of Facebook verification code reception failure in 2026: forced WhatsApp redirect loop, high-frequency 2FA re-verification triggered by BM ad backend, and number line vs. IP location conflicts. Provides a complete practical path from switching back to SMS channel, troubleshooting risk control blocks, to selecting short-term and long-term number solutions based on account value.