Unfortunately, you cannot renew your Azure Developer Associate certification after it has expired. You can only renew it within the six months prior to its expiration date. If your certification has already expired, you will need to re-take the certification exam to obtain the certification again.
References:
- Renewing your certification
- Microsoft Certified: Azure Developer Associate
- My Certification got expired a day before, can i still get renew link - Microsoft Q&A
- Troubleshoot Azure App Service certificates
- Renew your Azure Key Vault certificates
- Certification process overview
- Common issues and solutions