Multiple unknown signers

Hello, I’m trying to use the docusign rest api to create a signing url from a pdf. The problem i’m encountering is no matter whether i sent up a placeholder recipient or use a template to have a user create their own envelope they can sign i get auth blocked. the reason why i’m doing it this way is that A. users in my app may not have a pre-existing docusign account and i don’t want to add a cascade update for all event documents when they make one B. i don’t want our app to keep having to use the hosts docusign account to add people as recipients. all i need is a solution that opens a signing event in a url and the host can get those signed documents