Add Webinar Registrant runs into error code 3000: "... does not support paid registration"

For Registrants using a payment method different from PayPal I used to add them using the REST API through a PowerShell Script.

This worked fine until yesterday, but fails today.

Did you change the semantics?

I have just noticed a minute ago that I have the same problem.
By postman, I tried to add webinar registrant(without paying) to webinar which needs to be paid by normal zoom registration and paypal integration, but it failed.
It had succeeded until 2/26.

    "code": 3000,
    "message": "The Zoom REST API does not support paid registration."