Hi Simon, Please follow the guide here <https://developers.google.com/adwords/api/docs/guides/authentication#oauth2_playground> for the OAuth2 playground. You need to manually input the "https://www.googleapis.com/auth/adwords" and click the Authorize APIs button for the AdWords API.
If you have further clarifications on this, I suggest to kindly create a new forum thread so we can better track your concern. 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/98941073-8d87-42d9-b56c-bb68c5c0262e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.