Hi,
Thank you for reaching out. Once you click the Google Ads manager accounts page you would be given options to login to the existing accounts or create a new account. Please select + NEW GOOGLE ADS ACCOUNT to create a new test manager account. If you encounter any problems creating a new client customer account under the test manager account, you could create it via API by referring to this code example.
Thanks and regards,
Xiaoming, Google Ads API Team
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| Xiaoming |
| Google Ads API Team |
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