To use iOWeblink, you need our PlusPackage for Daylite, which I also available as a free 30 day trial.
In addition to that you need an active iOAccount, which you can create free of charge in your PluginCenter.
When you use iOWeblink for the first time, you will be asked to allow iOWeblink to access your Daylite data. This is necessary to display your shared data when the project website is opened via the iOWeblink.
Related Articles:
How to create a free iOAccount?
What is Plus Package for Daylite?
What does a third party see in iOWeblink?