Known Issue: Error saying "We're having problems loading this" when enabling developer mode

Yeah it's fixed now. There was two different problems and so two fix.

For the first issue, the one you most likely have : 
- My facebook account was still locally logged to Meta Quest Developper Hub when I transformed it into a meta account. The fix for that is quite simple, go to C:/Users/YourUserName/AppData(don't forget to show hidden folders)/ delete every Meta Quest Developer Hub folders, Oculus Developer Hub folder and Oculus folders. This ensure that the app will help you logging again. You cannot break anything by targeting these folders, you will just loose the personals information stored by the app on your PC. You probably need to delete only a single of those to fix the problem.

For the second issue it may be less global but if you are not using the basic antivirus/network protection provided by Windows this is worth looking into :
- On my case, Eset Endpoint security, my Firewall was blocking every api call from meta/oculus/facebook so the login could not go through. I had to look into how to accept some network traffic to unblock the app. Once fixed, I never encountered any other issues with it.