Docusign plugin - Issues with email or password

Hello everyone !
I’m trying to use the Docusign plugin by Bubble to send documents for clients to sign.
I have both a normal account and a developer account.
I’ve set up everything with the informations required, but everytime I try to use the action ‘Get docusign embedded signing url’, this issue pops up.
I am using my developper accound credentials. Is there something I’m missing ?



Capture d'écran 2023-09-15 094441

The Bubble support and Docusign support could not help me on this subject, sadly.