Customer service systems often have a rating system, and representatives may feel pressured to maintain high ratings, which may cause them to focus more on speed rather than depth when handling issues.

You can try setting up automatic notifications so that when the product status is updated (for example, when the supplier notifies that it is out of stock or discontinued), the system can automatically send reminders.

You can try to find a setting for free shipping that might allow you to make it conditional based on order amount. You can disable it or delete it.

Try logging into your Shopify account using a different browser or device to rule out device-specific issues.

Implementing the basic configuration you describe is possible on Shopify, but will require some customization work.

You can create SVGs using graphics editing tools to reduce the need for manual coding.

You can try clearing your browser cache and reloading the Shopify website, or disabling or temporarily removing plugins in your browser, and check if this improves.