Sender's phone number or WABA returned "not found".

Meta returned "not found" for the Sender's phone number or WABA.

1. Phone number was deleted from the WABA linked to this account.
2. WABA linked to this account was deleted.
3. WABA was unshared with Twilio

• Confirm the phone number and WABA still exist within Meta and are shared with Twilio
• Delete the Sender and reonboard.