I have created a new guide for custom domain please review!

Develop Seed Hypermedia

How to Add a Custom Domain to Your Seed Hypermedia Site

You can easily publish a hosted Seed Hypermedia Site to your own domain!

Inside the Seed app, go to your Site.

Click Set up web Domain.

Enter your domain name and click Publish to Domain.

Depending on your DNS provider's capabilities, you have two options:

If your DNS provider supports ALIAS or CNAME flattening:

Set an ALIAS or CNAME record for your domain to point to: yoursite.hyper.media (replace yoursite with your Site's name)

If your DNS provider does NOT support ALIAS/CNAME flattening:

Set an A record to point to: 52.22.139.174

DNS changes typically take around 10 minutes to propagate.

Keep the app open during this time.

Once propagation is complete, your Site will be live on your custom domain!