| Device won't connect | All SERVER_*_URL_BASE entries point to correct IP and port. Test: http://[IP]:39832/WebCore |
| Not in Active Subscriptions | Device ID in .ini must exactly match Device Maintenance (case-sensitive!) |
| Empty database / no data | Run NEW_DEVICE broadcast from EM after installation to push all config data |
| SCO not entering kiosk mode | SELF_SERVICE_CUSTOMER_USER=SCO set? SCO user exists in EM (HR -- Users)? |
| CSS not applying | Stylesheet assigned under POS Terminal -- User Interface -- Branding/Style? Device restarted? |
| DB access denied | Verify DATABASE_USERNAME, PASSWORD, and SCHEMA in .ini match the MariaDB setup |
| Firewall blocking | Disable Windows Firewall for initial setup; re-enable with correct rules once working |