The car sends live data to ABRP itself, and the car and the server go over the same mobile connection: when the car cannot reach ABRP, it cannot reach the server either, so the server's fallback bought nothing. The forwarder, its ABRP_* settings and abrpSentUtc are gone; the server only stores. The app stops sending abrpSentUtc (the server ignores unknown fields, so 2.11.0 keeps working) and its texts no longer promise a server fallback. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki