Using 2.0 user credentials in 3.0, http 401 appears

[shajia313]

I use the user credentials opened in version 2.0 to perform: result = Reports().post_report(body=data), there is a problem of http response 401, I would like to ask: whether the user credentials opened in version 2.0 cannot be used in 3.0

[shajia313]

By using the refresh_token/client_id/client_secret/profile_id data in credentials.yml in version 2.0, and user_agent = 'python-ad-api' and url='https://advertising-api.amazon.com/reporting/reports', I tried request, but still got 401, even after using sanbox url='https://advertising-api-test.amazon.com/reporting/reports' to make a request, there was a 503 service response