Deleted events still showing up

hello,

I’ve created recurring events for testing called ‘ismetlodo’ I’ve removed them, but they still show up in my calendar (MON 10AM-11AM) is there a way to remove them manually from the database, where should I look?

Under booking it shows up in orange, but there are zero bookings.

The event in the calendar is non-clickable. (tomkery.eu/kristalycsepp/orarend)

there are no additional event plugin, only WP FullCalendar

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