Why are items not showing on my Square Online?

After the categories and products are migrated, they will be stored in your Square Item Library. From your Square dashboard, you can view the items, customers and orders. To sync the items to your Square Online store, please go to Items > Item Sync from your Square Online overview page. Here you can choose to sync all or part of the items. Once the sync is complete, all items will be visible on your Square Online store.