Is your app active both account-wide and inside your funnel?
Is your tracking code added to the head tracking code of your funnel?
Are your funnel pages and products added in the same as shown in ClickFunnels?
Make sure you deleted ANY previous Facebook Pixel code you had on your site. This includes the funnel-wide tracking code in your funnel settings, head tracking code inside funnel pages, and in the event set up tool inside of Facebook's Event Manager.
Use the Facebook Pixel Helper Chrome Extension to test your pixel and see the events on each page.
Refer back to the Facebook Pixel app installation article and go through the steps.
For PayPal orders, double check that you did not check on the switch to track orders in ClickFunnels inside of your funnel app section.
For all other orders, did you correctly add your Webhook URL into ClickFunnels? Make sure to go back through our Tracking ClickFunnels Orders In Funnelish article and follow the steps.
Did you make sure to follow the steps in the Tracking PayPal Orders In ClickFunnels article?
Make sure you have the right Product ID copied from Funnelish and placed into the right spot inside of ClickFunnels.