Hi Gabriele,
Thanks for reaching out!
I took a look at that page, and it looks like some of that styling is coming from the site’s theme – no need to purchase any additional plugins! I do want to point out that the Avada theme has its own styling for our plugins (you can read more about that here). I would recommend starting by adjusting the styles there to see if you can get it close to what you’re looking for. However, keep in mind that the theme plays a large part in how our calendar displays on each site.
You can also adjust the Default stylesheet used for events templates and Events template settings under Events > Settings > Display, which control how much the theme affects the styles of our plugins.
I hope that helps, and please let me know if you have any questions!
Thanks,
Jennifer