Session duration 0:00, but added to cart..?!

Topic summary

  • Issue: TikTok ad traffic shows a ~4% CTR, but Shopify reports session duration as 0 seconds for nearly all clicks. Despite this, some visitors still trigger add‑to‑cart events.

  • Context: Landing page is a mobile-only product page (link provided). Page speed is reported as 63/100, and the poster does not believe loading is the cause. The ad creative matches the product page content, aiming to avoid mismatch.

  • Campaign setup: Target audience is selected by TikTok’s AI. “Conversions” in the ad report refer to add‑to‑cart actions, as there have been no purchases yet.

  • Questions raised: Why does Shopify (or site analytics) show 0-second sessions? How can users add to cart if the session duration is recorded as zero?

  • Evidence: A screenshot of TikTok targeting/performance is included; it is supportive context rather than central evidence.

  • Status: No diagnosis or solution provided yet. The thread is open with unresolved measurement discrepancies and potential tracking/attribution issues not yet addressed.

Summarized with AI on January 16. AI used: gpt-5.

I’m running tiktok ads with CTR of 4%. But almost all people that click the ad, have a session duration of 0 seconds. And yet, some of them even manage to click add-to-cart in that time. I don’t understand whats going on!

Website: https://lavrall.com/products/ultimate-epilator-a-lavrall-original (built for mobile only)

Relevant details:

  • Loading speed doesn’t seem to be the issue, website speed is 63/100.

  • My ads show the product that is actually presented on the website. No mismatch here.

  • Target audience is determined by the tiktok ad AI:

(conversions here are adding to cart, because I haven’t been able to get any actual sales yet)

Why is session duration 0 almost all the time?? And how come people still add to cart?