It is currently offering "domain install" and "individual install". "Domain install" is the option you need to select to use Enterprise Connect.
We're continuing to correspond with Google to get our G Suite application listing accurate. It appears that they are making changes on their side at the moment.
The published link of https://chrome.google.com/webstore/detail/cronofy/addpjfjiamildabdcppfadfmiloppkhl redirects to the G Suite Marketplace listing and so should still work. We will be updating our site and documentation to link directly to the G Suite Marketplace once we have confirmation from Google that all issues are resolved.
Posted Nov 13, 2018 - 02:14 UTC
Update
We have raised an issue with Google support and are awaiting their response.