Cannot delete users in Zoho Expense Finance Plus

Cannot delete users in Zoho Expense Finance Plus

Is there a way to delete users in Zoho Expense Finance Plus?  I see the option when clicking on the gear icon on the specific submitter, try to delete, i get this message: “User deletion is not allowed in Finance Plus. Please mark the users as inactive.” I cannot mark the user as inactive since the user had an incorrect email address and never got the registration.