Due to human (non-bot) spam the first contribution of a user has to be reviewed and activated manually, all further contributions do not require this.
As long as a user does not have at least one reviewed and activated contribution, the user is unable to edit his profile, set a avatar, title picture or a signature.
I just now finished getting "Mining Basic Upgrade" with the hopes it would make my Arrastras 100% more effective. The time is reduced, but the ore consumption is reported still as 12 per work. Is that a bug or working as intended?