Cannot generate 2FA backup codes from redmine.org
I think there is some misconfiguration on the web server: the email is send but the codes aren't generated.
Updated by Jean-Philippe Lang 6 months ago
In Redmine 4.2, security notifications seem to be sent synchronously, unlike other notifications that are sent later. It triggers a timeout when sending the notification from redmine.org.
I've disabled these notifications and 2FA backup codes are now displayed.