Azure Logic App to Sharepoint Connector - authenticating by a guest user

Question

I have guest account access to my client's Azure tenancy, where I'm creating a new new Logic App workflow. I am attempting to connect to their Sharepoint site, which I have access to as an admin member.

However, when setting up the connection and authenticating to sharepoint, via oauth2, ensuring I am logging into my client's domain, I get the following error: access token not found:

Alternatively, I can have set up a connection from the same workflow within my client's tenancy, but to a Sharepoint site I have created in my organisation's tenancy, and I am able to create the connection successfully.

Please could you provide insight into the error that I'm getting and how I can overcome this to create the connection?

Thanks in advance.