I changed something in Design Studio but the storefront didn't update
Editing a preset and publishing it are two different steps — this is the most common "it's not working" report, and it's a missing save step.
Design Studio edits only take effect on the storefront once a preset is explicitly published, or made live. Editing a preset by itself only saves a draft — it does not push anything to shoppers.
If a change isn't showing up, go back into Design Studio, open the preset you edited, and confirm there's a clear "Publish" or "Make live" action you haven't taken yet.
This is worth checking first, before assuming it's a caching or theme issue like the template-edit delay described elsewhere in this Help Center — the two look similar from the storefront but have different fixes.