ODK Central not loading on DigitalOcean with FreeDNS

Support
1

1. What is the problem? Be very detailed.
The ODK Central landing page is not loading. Firefox gives me an "Unable to connect" message. It has been over 24h now since I created the subdomain on FreeDNS.

2. What app or server are you using and on what device and operating system? Include version numbers.

  • ODK Central (latest version I guess since the installation was done on Tuesday)
  • DigitalOcean (Ubuntu 20.04.2).
  • Subdomain via FreeDNS

3. What you have you tried to fix the problem?

  • I have double checked that the subdomain is correct in the ODK Central settings using the nano .env command in the DigitalOcean console (XXX.mooo.com).
  • I used the ping command in the Windows console to check the URL. The URL is correctly resolved and points to the correct IP address for the Droplet (128.199.44.104).
  • I ran the docker-compose ps command again to check the server status. nginx is up (healthy) as it should be.

4. What steps can we take to reproduce the problem?
Since this is a business installation, I could only send the server URL via private message.

2

I have now switched from a XXX@mooo.com domain to a XXX@dockl.com domain and now it is working.