Just a heads-up for registered read-only forum users:
If you never posted anything, you probably will have to register again. You should be able to use the same username and password as before.
Over the past five years a rather huge amount of fake accounts has been created by spammers/spam bots. Since separating these from legit read-only user accounts unfortunately is next to impossible, today (2018/10/08) all users without at least one post have been deleted from the database to ensure the best possible forum stability and performance.
Sorry for any inconvenience that may cause.