@Bo58 : https://www.airbnb.com/help/article/476/how-do-i-snooze-unlist-or-deactivate-my-listing
If the errors are of a technical nature, you'll have to go to Airbnb to help you out. But note this sentence from the link above: "You won't be able to permanently deactivate your listing if you have any upcoming reservations or reservation requests."
If you have any active bookings, you have to cancel them before you can delete your listings/accounts. And any active requests have to be declined. Follow those steps and try again; if you still have difficulty, contact Airbnb.