external ticket link is href="#" when clicked

hi
when i click on calendar page from home page and click on the tickets buttons it takes me back to the calendar page. I checked and turns out that the href field is # for first attempt please help fix this .
Please visit https://www.jessicayaffa.org/ then click calendar then click the ticket button on the events you’ll see the issue.
this is urgent please reply back asap.

https://www.ads-software.com/plugins/all-in-one-event-calendar/