Do these steps once, in this order.
cd ~/Downloads/WeatherRouting and press Enter. Extracted it somewhere else? Type cd (with a space), drag the folder into the Terminal window and press Enter../install.sh and press Enter.Do these steps in the Terminal: right-clicking a script and choosing Run or Open With does not work on every Linux.
Install puts WeatherRouting in your own user folder: after that you can delete the unpacked folder and the zip.
The relay keeps a record of what you download (which models, how much and roughly where), so Steef can see how the app is used, and keeps the messages you send.
If the shortcut does not start: right-click it and choose Allow Launching. Or open a Terminal and type ~/.local/lib/weatherrouting/start-weatherrouting.sh.
Open the Areas tab, open an area and press Refresh all. The first time this takes a few minutes.
cd ~/Downloads/WeatherRouting and press Enter, then type ./install.sh and press Enter. Then start WeatherRouting from the menu.Your boats, routes, calculations and sign-in stay where they are: an update only replaces the app. Then you can delete the unpacked folder.