Logged in as the site admin, I can see events in the upcoming events widget listing.
When logged out or logged in as a subscriber, I can not see the upcoming events.
Furthermore, and possibly related, the admin can see the event listing but no other user can: http://www.munterwestermann.com/rsrescuedev/classes/
Perhaps a conflict with Membership plugin?
I have tried changing theme to Twenty-Fifteen but no change.
Thanks in advance for your help. You already have access to the site.