If your feed is not updating when you make changes to the Feed Display page in the TikShop Admin, this is likely because the "Use Default" settings are not checked for the feed you are looking at. To see if this is the case, go to the theme editor through the Shopify Admin.
Once here, navigate to the page that has the TikShop feed that you are concerned with. Click on the TikShop section and look if "Use Default Settings" is checked.
If it is not checked, check it and the feed will update to use the Feed Display global settings once you hit save.
If you leave this unchecked, the settings within the theme editor will apply.
If you have any issues or questions, please feel free to reach out to our support team and we're happy to help.