You need to create a project, the helper will then be running on the servers of the project.
Create a new Repl.it account, it will be needed so you can create projects on the platform.
Visit this website and press the blue fork button, then wait until it's loaded.
Press the run button on your new project and wait until it finished.
Once it loaded you will see a small windows that says Copy Project URL, press it and paste the URL in the box below.