ODK Central on DigitalOcean Installation

Hi @kazukiming ,
We're glad you're here. When you get a chance, please introduce yourself on this forum thread.

Getting the server up and running is tricky, I've stubbed my toes a good few times on infrastructure and networking.

Tell us:
Have you configured the domain correctly?
Are your containers running? docker-compose ps
What do the logs say? docker-compose logs
Can you find your error(s) in previous posts about ERR_CONNECTION_REFUSED in ODK Central or elsewhere in the forum?