Regarding the updates, you will need to manually update the code, the SmartApp will automatically notify you when new updates are available. The instructions are given on www.rboyapps.com
As for the second lock there could be three reasons for that:
- Lock could be defective (what lock/model is the 1st and 2nd lock)
- The Device Handler isn’t reporting the correct user, are you using the stock ST DH or the Enhanced Z-Wave Lock DH
- The database is corrupted, which is a simple fix - just reopen the app and click Done