SP-API Reports - Account Argument

[saadsikandarkhan]

How to set up a single application so that I can pull from SP-API Reports for all the accounts on my vendor central portal? Currently, my private application is only getting data for one account.

I can manually download excel reports through vendor central portal for other regional accounts, however, is there way to loop through all the regional accounts (using this library)?

how do I change it from default to something else