Hi Teresa,
The
DEVELOPER_TOKEN_NOT_APPROVED you're getting means you are trying to access a production account with an unapproved developer token. To test with the AdWords API, you need to use a test client account which should be under a test manager account. You can follow the steps outlined
here to create the accounts. Once created,
please use the clientID and clientSecret generated from an email address of your test account,.
If this doesn't fix your concern, feel free to write back to us with your complete SOAP request and response logs via Reply privately to author so we can further investigate the issue.
Regards,
Peter
AdWords API Team