First, check your events debugger. Most of the time, the issue will be related to your query ID. If your conversions don't include a query ID, they may not be forwarded to the relevant feature.
You should ensure you are sending clickAnalytics set to true to obtain the queryID, and send the queryID with your conversion event.
You can review this article for more information on this issue, and you can read more about specific implementation steps here.
