Sudden Drop in Conversions for Trade Desk Campaigns: Need Troubleshooting Help

Hey everyone, I've noticed a sharp decrease in conversions over the past week for all our Trade Desk campaigns. This issue is significant as our image pixel for tracking and optimization is correctly implemented and has been functioning without any changes from our end. The pixel hits remain consistent, yet the conversion rate has drastically fallen. This coincides with some recent changes our client made to their website about a week ago, but I'm uncertain about the specifics of these changes. Could anyone assist with troubleshooting this issue? I'm not very familiar with the intricacies of pixel implementation and would appreciate any guidance to resolve this problem.