Kalendar stack - creating a link

Happy New Year!

Updated a website with the Mint Theme by Elixir Graphics today for a car club.

macOS High Sierra v 10.13.6
RW8 8.4.1
Stacks 4


I started using the Kalendar stack from Weavium to post the club’s 2020 events, however, in the description panel I would like to add a link to the website listed, it is not allowing me to do this.

I can create the link however it does not work.

Is it me or is this not possible with this stack?