Google Ads Enhanced Conversion Tracking Setup

We are seeking an experienced freelancer to fix Enhanced Conversion Tracking for our Google Ads campaigns. Our enhanced conversions have not been set up correctly and we are missing valuable conversion data which is impacting optimisation of our Google Ads campaigns. We have this specific message within our google ads account: "Issues with your API set up are limiting enhanced conversions data received Your API isn't set up correctly to send order ID, OAuth credentials, and hashed user data from your website." We will need a candidate whom has fixed similar issues and worked with Google Enhanced conversions previously. We have a Google Tag Manager account but do not currently use the account. Ideally we require someone with experience of Google tag manger who can set the account up for us and integrate conversion tracking. We use the Shopify platform and have the 'google/youtube' app currently integrated with Adwords. We use the Shopify app for our conversion tracking. The ideal candidate will have a strong understanding of Google Ads and conversion tracking, ensuring accurate data collection and analysis. Responsibilities include configuring conversion actions, setting up tracking codes, and ensuring seamless integration with our existing systems. The goal is to optimize our ad performance and improve ROI. This is a one off project. We need someone to permanently fix these tracking issues within our Google ads account.