Hi eBay Developers,
I am currently experiencing an issue where I cannot log in to the eBay Sandbox environment.
When I attempt to access the Sandbox login page (https://signin.sandbox.ebay.com/), I am consistently redirected to the Production login page (https://signin.ebay.com/).
I have already tried the following troubleshooting steps:
* Accessing the Sandbox login URL directly.
* Using different web browsers (Google Chrome, Microsoft Edge).
* Using incognito/private browsing modes.
The issue persists across all attempts.
Prior to this login problem, I was also encountering intermittent "upstream connect error or disconnect/reset before headers..." errors within the Sandbox environment, particularly when trying to view listings via search or potentially other UI elements shortly after successful API calls (like AddItem).
Could you please confirm if this is a known issue with the Sandbox authentication or routing at the moment? Any information regarding potential workarounds or an estimated time for resolution would be greatly appreciated. Thank you for your assistance.
