WhatsApp Support Integration Repair -- 2

My website is currently using Waboxapp to send WhatsApp messages, but it has stopped working. The issue is with the API key, which seems to have expired or become invalid. I have a new API key ready to be integrated. The task at hand is strictly focused on repairing the existing integration without the addition of new features or enhancements.

Ideal skills and experience for this job:
- Proven experience with Waboxapp and WhatsApp API
- Proficiency in API integration and troubleshooting
- Ability to work efficiently under time constraints