Hi @AlekD !
Have you tried reaching out to Shopify support team yet to have their further insights regarding this matter? If not yet, I highly advise you to do so, as they can further take a look into your account and check if there’s any issue on your account that might be causing this huge impact to your analytics. They will be able to determine if there is a system issue or account issue. Also, if there is something needed to be improved on your account. You can reach out to them by going through their Shopify Help Center and enter your concern on AI chat box, respond to it until the “I still need help” or “chat with a support advisor” option appear.