| Problem | What to do |
| iPad says "Reconnecting" or won't open | Same Wi-Fi as the computer? Use http://, not https. iPhone: Settings → Cellular → turn off Wi-Fi Assist; Settings → Wi-Fi → (i) → turn off Limit IP Address Tracking. Windows computer: the Wi-Fi must be a Private network and Node.js allowed in the firewall. |
| LED shows a window, the desktop or the taskbar (not full screen) | On the iPad: System → Screen → Restore full screen on the LED. Wait about 5 seconds. Don't use Esc or Alt+F4 on the computer. |
| LED screen is black | Is Blackout on? Is Chrome in full screen on the LED display? On the VX600 display, the HDMI input must show a signal (3840×600). |
| Image cut or stretched | System → Screen → Output area should be "Whole window, no VX600 crop" (VX600 input crop OFF, Main layer Full Screen 5200×200). If it still looks wrong, call Kreative D-Signs (VX600 settings). |
| LED shows the wrong part (top or bottom of the picture, not the middle) | The computer moved the picture a few pixels. System → Screen → Test pattern → Alignment. The LED now shows numbered stripes and a green frame. Tap ↑ / ↓ (1 or 10 px) until the green frame fills the LED with its top and bottom lines visible. Then check with Cabinet numbers and turn the pattern Off. The position is saved. |
| Wrong goal or action | Tap Undo. |
| Console line says "No console data" | Check the cable is a null-modem, the USB adapter is plugged in, and the right port is chosen. Tap Find serial ports. |
| App window closed by mistake | Double-click Start Deep South LED again. Everything is saved. |
| "UNLICENSED" in a corner | Call Kreative D-Signs to renew or install the license. The app keeps working. |