Hi, It seems that the original manager account's email address (aside from using this in requesting the developer token originally) was also used to generate the OAuth2 credentials (client ID, client secret, refresh token) that's why you received the invalid_grant error with "Account has been deleted" error description even after updating the developer token.
With this, I recommend you to generate a new OAuth2 credentials <https://developers.google.com/adwords/api/docs/guides/authentication#generate_oauth2_credentials> by selecting a new user with admin/standard access from the new manager account. The guide includes the "Configure and use a client library" <https://developers.google.com/adwords/api/docs/guides/authentication#configure_and_use_a_client_library> section which has a step-by-step guide in generating the refresh token depending on the client library that you are using. If the issue still persists after following the suggestion, then kindly provide your SOAP request and response logs or any error logs together with the API user's email address and clientCustomerId via *Reply privately to author* option so I can further investigate. Thanks, Vincent AdWords API Team -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and Google+: https://googleadsdeveloper.blogspot.com/ https://plus.google.com/+GoogleAdsDevelopers/posts =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/adwords-api. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/0edc1707-c36e-474f-add6-29e990015793%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.