Hello, I am trying to connect my site to Google Ad Manager using the Newspack Ads feature, but I keep getting the error 'Unable to fetch network code from GAM'. I have already correctly set up the Service Account, enabled the GAM API, assigned the Administrator role in GAM, and uploaded the JSON key, but the issue persists. Can you please help me investigate?

Hello, I am trying to connect my site to Google Ad Manager using the Newspack Ads feature, but I keep getting the error 'Unable to fetch network code from GAM'. I have already correctly set up the Service Account, enabled the GAM API, assigned the Administrator role in GAM, and uploaded the JSON key, but the issue persists. Can you please help me investigate?