I have the same problem different message and am locked out. Help Please !!!, Fatal error Call to undefined function bp_core_load_template() in /home/content/21/7530721/html/wp-content/plugins/jet-event-system-for-buddypress/main/jet-event-start.php on line 15
On the drop down tool bar at the top of your screen, you will see, message management, You have three choices and one of them will take you where you want to go. After deleting the post, you will be able to turn that page into a nice looking landing page. Add a nice photo, graphics, video, text, Links and on and on. I can’t check if for you as I have a Fatal error to figure out . Good luck !