Hydrogen + Shopify Online Store on Different Domains – One Works, One 404

[MiiNoc]

I'm using the Basic Shopify plan (the lowest-tier plan).

I have set up a Shopify Online Store using a Liquid theme and successfully pointed my domain shop1.domain.com with the following DNS settings:

CNAME: shop1 -> Value: shops.myshopify.com

At the same time, I’m also using a Hydrogen storefront (React.js). I want to point shop2.domain.com to my Hydrogen store, but when I visit shop2.domain.com, it shows the Oxygen 404 page. However, my Hydrogen preview link (hydrogen-theme-xxxxxxxxxxxxxxxxxxx.o2.myshopify.dev) works fine and is publicly accessible.

For shop2.domain.com, I configured the DNS as follows:

CNAME: shop2 -> Value: hydrogen.shopifyapps.com
(I also tried using shops.myshopify.com for shop2, but it didn’t work.)

Currently, shop1.domain.com works fine, but shop2.domain.com is still showing a 404 error.

Has anyone else encountered this issue? I really need some advice.

[MiiNoc]

Thank you for your response!
I'm setting up a Hydrogen storefront alongside a Liquid theme and encountering issues with Oxygen hosting, as you mentioned. It seems that the CNAME I'm using might be incorrect or not fully connected.

Could you provide more details on how to check and fix this? If needed, I can share more information about my current DNS setup.

Looking forward to your support!

Thanks