Almost there
The app is installed but it does not know which Firebase project to talk to yet.
Do this once
- Open
public/app-config.js
- Firebase console → cog icon → Project settings
- Scroll to Your apps → click your web app → Config
- Copy each value across, replacing the
PASTE_... text
- Save the file and reload this page
These values are not secret — they are meant to be in the page. Your data is protected by the security rules, not by hiding these.