Hi veruska,
Thanks for your note. You’re not doing anything wrong! At this time, Events Calendar PRO does not have the functionality to export multiple events (like from a results page) to Google Calendar. It can only import individual events, such as from the link you included.
We are currently looking into this to see if it is possible to expand the Google Calendar export to include multiple events. Hopefully, we’ll be able to include this feature in a future release. You can stay updated on our progress by watching the UserVoice feature page.
Best,
Leah