If you're facing the issue of a WhatsApp account being permanently blocked after integration with Odoo, and you've already gone through the verification process with Meta, there are a few steps you can take to resolve this:

1. Review Compliance with WhatsApp Policies:

• Ensure that your integration complies with WhatsApp's policies, including the type of messages being sent, the frequency, and the nature of the customer interactions.
• Avoid sending bulk messages or using the account for promotional purposes without user consent, as this can lead to account blocks.

2. Contact Meta Support:

• If the account was blocked again after the initial resolution, reach out to Meta's support team and provide them with all relevant details, including past interactions, to expedite the process.
• Explain that the account was previously unblocked and that you're facing the same issue again.

3. Check for Integration Issues:

• Review your Odoo-WhatsApp integration settings to ensure that no settings or configurations might be triggering the block. Sometimes, the use of third-party tools or scripts can cause problems with WhatsApp's automated systems.

4. Use a Business Service Provider (BSP):

• Consider using a verified WhatsApp Business Service Provider (BSP) for your integration. BSPs often have direct channels with Meta and can provide more robust support and compliance management.

5. Account Appeal:

• If your account continues to be blocked, you can appeal directly through the WhatsApp app or the Meta Business Manager. Provide all necessary documentation to support your case.

6. Backup Plan:

• As a precaution, consider creating a backup account or using another method of communication while waiting for the resolution.

If you continue to encounter issues, I recommend maintaining open communication with Meta’s support team and carefully reviewing the terms and conditions related to WhatsApp Business API usage.