Flowx runs as WebAssembly with garbage collection, which this browser does not support. Update your browser, or use one of these:
Your browser supports the app, but WebGL2 is unavailable, so the map cannot be drawn. Usually one of these fixes it:
Flowx for iOS and Android has everything the web app does, and more.
Supported browsers: Chrome/Edge 119+, Firefox 120+, Safari 18.2+, each with WebGL2 available. Questions: flowx.io.