The current ORM version doesn't support ORC constructed course. As workaround you can enter calculated times manually. To do this you need for your class checked the "Enter calculated time" settings on the Admin > Class detail
After you prepare your regatta you should be able to see another time input on the Results Editor. This enables to enter your calculated time.
This support is only for the system related issues (when you cannot login etc..). With issues connected directly to the event (changes in registrations, payment details/questions etc) please write an email to the organizing club.