Access Rights on API

Question

Hi, so i am building an integration, and i am testing atm. what i get when i call the apis with postman.

The calls have worked prior to today, but now when i call customers/ or invoices/drafts or products/

i get a Login succeeded, but it displays a message that says "You don't have sufficient access rights for this action."

What has changed ?

the tokens are correct as far as i can see..