Click on Website Editor under Configuration to access your website and edit it.
The website will open in the edit mode. It will contain 3 pages - Info, How it works and Contact - which you can alter.
Whenever you make changes, you can save and publish them. Publishing the website changes does not mean that the website will be publicly visible (click here to read more about publishing the website).
All the versions you save and publish are available in the Versions list. If you would like to go back to a previous version, choose it from the dropdown menu and publish it again.
The Preview button will give you a preview on how the page looks like.
The new content will always be visible on the website only after you click on Publish.
If you want the website to be constantly updated with the changes, click Save and Publish right after making the changes.