Budget: 100 USD Deadline: 1 day
Good day.
I have experience working with OpenCart and setting up GA4 / GTM / Google Ads for online stores, including e-commerce events, product ID transmission, and verification through Tag Assistant / DebugView.
According to your description here, it is likely necessary not just to "add a tag," but first to carefully analyze the current implementation: how GA4 / Ads are currently connected, where the product ID comes from, how the `view_item`, `add_to_cart`, `purchase` events are formed, and whether the IDs match the Merchant Center feed.
I have worked with OpenCart.
https://freelancehunt.com/showcase/work/rozrobka-modulya-onovlennya-tsin-ta-zalishkiv/2000112.html
I have also set up Google Ads / GTM for stores.
Regarding timelines:
approximately 2–5 working days depending on whether the issue is only with tagging or if there are additional questions regarding the feed / Merchant Center.
Regarding cost:
I initially see this in the range of 4000–8000 UAH, if we are talking about an audit of the current scheme, fixing events, correct transmission of product ID, and verification of results.
If it will additionally be necessary to separately finalize the feed for Merchant Center, it is better to calculate that after a brief technical audit.
For a more accurate estimate, I need to clarify:
1. what version of OpenCart;
2. whether there is access to GTM, GA4, Google Ads, Merchant Center, and website files;
3. which specific product ID is used in the Merchant Center feed.
I can start with a technical audit of the current implementation and after that provide a precise work plan, timelines, and final cost.