This is a developing situation and we will update this article if anything changes.
As per the NPCI UPI Circular NPCI/UPI/OC-95/2020-21 dated 25th September 2020 wherein guideline on usage of UPI API are mentioned, NPCI has issued a new guideline wherein the API is allowed for only IPO use cases and is not allowed to be extended for other use cases.
NPCI has instructed through mail to stop with immediate effect on the extended use cases till further notice.