If you are experiencing issues with sending or receiving SMS after API integration, there are a few steps you can take to troubleshoot and fix the problem:
1. Check your API configuration: Ensure that the API integration is set up correctly and all the necessary parameters are configured accurately.
2. Verify API credentials: Double-check that you have entered the correct API credentials, including the API key, username, password, and any other required authentication details.
3. Test with a different phone number: Try sending an SMS to a different phone number to see if the issue is specific to a particular recipient or if it is a general problem with the API integration.
4. Contact your API provider: If the issue persists, reach out to your API provider or vendor for assistance. They will be able to troubleshoot the problem and provide guidance on resolving any technical issues.
Remember to provide them with specific details about the problem you are facing, including any error messages or error codes you may have encountered.