The "Quick Account" feature was designed for console players (PS4/Xbox One) who didn’t want to type a long email and password using a controller. It creates a generic, shell account linked to your Gamertag/PSN ID. On PC, this system acts as a bridge between your Steam copy and Bethesda’s servers.
Here is how to fix each of these scenarios.
Players often report leaving the screen for hours, only to find it still "creating". Server Outages: