Upstox API Authentication Failure (HTTP 401 / UDAPI100050)

Dear Upstox API Support Team, I am raising a fresh support ticket because my earlier email correspondence regarding API authentication failures has not received a resolution. I am integrating Upstox APIs into a Python-based NIFTY options paper-trading application (V48 Paper Engine). Issue details: API endpoint: GET https://api.upstox.com/v2/user/profile Latest HTTP status: 401 Unauthorized Error code: UDAPI100050 Earlier error: HTTP 403, potentially related to Cloudflare error 1010.