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Retell AI

Outbound calls suddenly failing with "Dial_no_answer" status. Calls aren't reaching Twilio at all (no Twilio call logs).
Setup: Spanish number (+34) connected via SIP Trunk. Was working fine until I registered the number for WhatsApp Business through Meta. Now all calls fail immediately.
Troubleshooting done:

Number still active/connected in Retell
Disconnected/reconnected multiple times
SIP trunk settings verified in Twilio
Tested directly from Retell playground — same issue
Voice capability still enabled in Twilio

Seems like calls are failing on Retell's side before reaching the SIP trunk. Any help appreciated!

Hello <@1425870052506210489> , can you share a call id