The only time we left the project was for a few months when our pay was cut off. As for the Point Of Sale software, new features are being added to it as we speak, but under a new name (tba).
To follow our work more closely, feel free to monitor our commits on github, and join us in our telegram chat group (http://t.me/Agorise). Steemit is used for the major announcements, not the day to day stuff.