Links won’t op in new page or tab

Hello Joe, Thank you for all your good work.
I’m running into a problem with the WP Accessibility plugin in combination with the Divi Eventcalendar. The links of te activitities won’t open in a new tab or page. After switching off the WP Accessibility plugin everything works fine. I couldn’t find a way to switch on or off link opening in a new tab. Am i missing something or is this default for the plugin?

The page I need help with: [log in to see the link]