Site isn't showing changes you've saved in the theme editor
Shopify has recently released a feature that allows you to selectively show information based on the market accessing your site, they call it "contexts."
We're referring to this area in your theme editor:
If you've worked in this dropdown, you will likely experience issues with your content not saving the way you're used to. As Shopify says,
Please read Shopify's help documentation for more details on this and how to sort it out when you're having difficulties, as it is not a theme issue, but part of their new international features.