https://www.evaair.com/en-us/about-e...r-service.html

A surprise to see I can call EVA at 10:30pm California time to talk to an agent. The following is the website update:

• Reservations & Ticketing: 1-800-695-1188
  Using a TTY device ( for hearing impaired only): Dial 711 to be connected through the Relay Service
• Hours of operation: Chinese and English 24hours/daily
  MON ~ SUN & U.S. Holiday: 05:30 - 17:30 (Pacific Time)
  Outside of the above hours, service is provided in Chinese and English by the Global Call Center.