Bigcommerce source connector, can't connect

Hi, I’m having trouble setting up the Bigcommerce source connector.
The connection tests failed.
HTTPError('403 Client Error: Forbidden for url:
Connecting the Bigcommerce via their python api works fine using the same credentials. I also noticed that the python asks for client_id as a parameter whereas i don’t see it as an option in Airbyte.

Can you confirm here the right scope