Testing API connection with exact diagnostic method...

Exact Method: FAILED - Invalid API response
GET Method: FAILED - Invalid API response
Simple Method: SUCCESS
Multi Method: SUCCESS (simple)

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INSTRUCTIONS TO FIX YOUR CONFIGURATION:

1. Copy the working function (test_zender_connection_exact) 
2. Replace the connection test function in your whatsapp_config.php
3. Change this line in your config file:
   
   FROM: $test_result = test_zender_connection_working($zender_url, $api_secret, $account_id);
   TO:   $test_result = test_zender_connection_exact($zender_url, $api_secret, $account_id);

4. Add the exact function to your config file

That's it! The connection test will now use the EXACT same method that passed in diagnostics.
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