Make sure you have the WPFunnels license activated and it’s not expired.
Install and Activate the plugin Transients Manager.
Go to WPFunnels > License and click on Deactivate License.
Then Activate the License again.
Go to Tools > Transients.
First, search for “wpfunnelspro” and one or more transients will appear.
Select them all and Delete.
Then, search for “update_plugins” and Delete.
Go to Plugins dashboard and refresh page.
Then WPFunnels plugin update should appear.