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What if my program is stuck on the boot-up screen?

This usually means the main program triggered at boot ran into a bug. Quick Debug Steps:
  1. SSH in – Even if the screen looks frozen, you can still SSH as long as the device is on a known Wi-Fi. If unsure, check your router (e.g., TP-Link admin page) for the device’s IP.
  2. Check Logs – Run: 
    journalctl -u mystartup.service -n 100
    This will show the last 100 lines of logs from your startup service. Look for errors or crash traces to locate the issue.