Track button clicks events

We must track clicks on the Add to Cart button across desktop and mobile before the sale campaign starts Tuesday. Implement click events named add_to_cart_click, include product_id and price in the payload, test on the live site to confirm events show in the realtime view, and send a confirmation to Maya in e‑commerce when done.

Before I ask dev to add Add to Cart click tracking, make the implementation easy to approve: show exactly which CSS selector(s) on desktop and mobile should trigger add_to_cart_click, provide the exact payload keys product_id and price, estimate expected click volume for the first 48 hours, and call out three things that would make Maya hesitate to rely on the metric.

We added add_to_cart_click events and Maya says clicks are doubled in the funnel for some users. I’m unsure whether the handler is bound twice, a form submit also triggers it, or a tag manager rule duplicates firing. Which three fast checks will identify the cause so I can tell Maya whether to trust the current numbers?

Across campaigns we repeatedly lose trust in click metrics: the mobile selector breaks, multiple handlers fire, or the payload misses product_id, forcing manual reconciliation. What three practical changes to how we specify, implement, and test click events will prevent these recurring issues and keep Maya confident in our click funnels?