Regarding two-factor authentication:
After selecting the Authentication App, scanning the QR code to set it up, and pasting the 6-digit token, an error appeared stating that generating the backup code failed (Developer Tools showed a 400 Bad Request error).
Currently, the settings appear to be working correctly on the configuration screen, but attempting to delete this two-factor authentication setup also results in a 400 error. Attempting to generate the backup code yields the same result.
Additionally, when attempting to generate a public/private key pair via the developer console, an error message briefly appeared stating “Two-factor authentication is required,” immediately redirecting to `https://app.box.com/login/mfa?redirectUrl=/developers/console/app/2500631/configuration&from=dev_console`.
In other words, it seems the two-step verification is likely not properly configured internally. However, since there is no way to obtain backup codes, I cannot even log out.
This is just a developer account intended solely for functional testing. I request urgent restoration.