Hi, @cc28 . Thank you for sharing all of that context! To clarify, did you have a chance to review your activity log to see who made this change? When you review the activity log it should list which staff account created for your store made the change.
Shopify staff don’t make changes like this to merchant’s stores so it’s unlikely this setting change was done by us, but I’d definitely want someone to take a look into this to make sure. In order for us to review your account with you, you’d need to speak with our support team through this page. We can’t authenticate your account here over the Shopify Community so we wouldn’t be able to see or share any information about your account here. That being said, if you contact us through the page I shared we can see more information to help you out.
For context, when you reach out to support through the Shopify Help Center it is standard for us to review your account with you by looking at the area of your store or admin you are reaching out about. We only ever do this when we have authenticated your account and are working on your open ticket. Also, when a ticket has back and forth responses like you described it is also standard to sometimes have multiple Support Advisors working on your ticket. This is to ensure you get help as quickly as possible.
Happy to help if you have more questions!