Well done! The cd with no arguments brings you to your home directory, as to always start off at the same starting point.
The rm mentioned only removes any leftover source files (under your home directory) from previous installations, not old executables. What should replace any executables is the install script, but that might leave some rubblish behind at its own discretion. What you say is a bit suspect, though. You did run the install with sudo, didn't you? You can rerun the install if you did not. In the past it had to be run twice anyway. Capture the output to start a good habit ;-)
To troubleshoot pypilot_web, run it at the prompt and examine the output. Note that, from the prompt, it runs off :8000 instead of :8080. You might also try the external adapter's ip address instead, e.g. http://10.10.10.1:8000 or http://10.10.10.1:8080.
The rm mentioned only removes any leftover source files (under your home directory) from previous installations, not old executables. What should replace any executables is the install script, but that might leave some rubblish behind at its own discretion. What you say is a bit suspect, though. You did run the install with sudo, didn't you? You can rerun the install if you did not. In the past it had to be run twice anyway. Capture the output to start a good habit ;-)
To troubleshoot pypilot_web, run it at the prompt and examine the output. Note that, from the prompt, it runs off :8000 instead of :8080. You might also try the external adapter's ip address instead, e.g. http://10.10.10.1:8000 or http://10.10.10.1:8080.