Here are the places where you can access the SYNC NOW feature.
To perform a manual sync of an individual item, please locate the entry, e.g. the product that you want to sync. Then, you can click on the sync icon, as highlighted in the image below.
A window will slide out, listing all the sync logs of that particular data entry. Please click on SYNC NOW to trigger the manual sync of that item.
Hike will then check if there have been any changes done to that item since the last sync is performed, and will sync that item to Shopify if any change has been made, or the other way around if Shopify holds the latest data.
If no sync log has been added after you click on SYNC NOW, it could be due to 2 reasons.