Related Questions:
Account is missing
An account cannot be selected when we are adding new bookings
Answer:
When adding a new Booking & selecting an Account, you may notice that not all Accounts are automatically shown in the list.
Listing all Accounts within an Organization every time would be slow (especially if there are 10k+ accounts) and therefore Event Temple fetches a list of 25 Accounts and filters the results based on what the user has searched. If you don't see the Account initially, start typing the name and it will appear.