Run the app builder locally

Configure

Open the file Builder/firebase_config.js.

Here you should enter the firebase connection string.

Open config/app.js

There enter your admin email, purchase code etc..

Install the npm modules

Using Terminal or Command Prompt navigate to the downloaded and extracted zip. Then navigate to the folder "Builder"

cd Builder
npm install
npm run start

This will start your project on localhost. You will get the correct link. Probably

http://localhost:3000localhost

Publish on your own hosting

After you have run the builder locally, and if it works ok you can easily publish it on your own hosting if you want.

run

npm run build

This command will make a dist folder.

Upload this dist folder to your hosting.