It all started an hour ago when I tried to download the Network Link Conditioner (I need to test the macOS application I'm developing with a slower network connection). I went to XCode > Open Developer Tool > More Developer Tool. It opens a Sing In page for apple developer. When I sign in with my account, it just refreshes the page and asks me to Sign In all over, stuck in a loop.
Otherwise, I'm able to Sign In to all the other parts of the developer website, I have an active membership, all license agreements are up to date. Apple's status site shows everything operational.
What I tried:
- Clearing cookies & cache
- Different browsers (including Safari)
- Updating & restarting everything
- Navigating from https://developer.apple.com/download/ to "More" tab on the website instead of going through XCode
- Signing in with a passkey instead of a password
- Tried using a VPN
- Going to the Developer Support page (https://developer.apple.com/support/) and trying to press "Get Started" to reach out to support by email or phone, but that asks me to Sign In and puts me into another sign in loop.
I have no idea what to do and I need the tool to test my app. Apple is providing no informative errors here to even figure out what could be wrong...