The pixel is added in OneTrack already. You need to check in Tiktok pixel helper, if you see the pixel can track View content, Add to cart, Initiate checkout and Complete payment event, so the pixel is working well.
TikTok is no longer count event with Page view anymore, so please ignore this event
View Content: When a user views a specific product or piece of content, a pixel can be triggered to record this event.
Add to Cart: When a user adds an item to their shopping cart or basket, a pixel can be triggered to track this action.
Initiate Checkout: This event is tracked when a user proceeds to the checkout process to complete a purchase. It indicates that the user is in the final stages of making a transaction.
Complete Payment: When a user successfully completes a purchase, a pixel associated with the tracking system is triggered in thank_you page.
Check the data in your Tiktok Event Manager
To see the event sent by OneTrack to your Tiktok, please open tab Overview in your pixel
For detailed, please see the data here:
If you are still struggling with Tiktok Pixel, please feel free to contact live chat support or onetrack.commerce@gmail.com for the best assistance.