Balalingo is only the graphical user interface, it also requires a Text Analysis Server to work. You can run the analysis server (called nlparrot) with docker:
There currently is no hosted server, but I'm thinking about offering one. If you're interested, send me a mail.
docker run --rm --name nlparrot -p 127.0.0.1:12345:12345 -e NLPARROT_LISTEN_HOST=0.0.0.0 -e NLPARROT_LISTEN_PORT=12345 balalingo/nlparrot
You can run Balalingo by executing the file
balalingo/balalingo from the downloaded package.
When you first start Balalingo you should configure it.
For this choose Options → Options in Balalingo.
Some configuration options apply immediately, some require a restart (there is no clear distinction, yet),
so please restart Balalingo.