Hey there 
Just to update this thread, our old Clickfunnels plugins are now deprecated and no longer maintained.
If you’re still using Clickfunnels and running into issues like this, it might be worth considering a move to Funnelish. Our team can help with the transition if needed 
Also, for anyone looking to use a 2 step checkout in Funnelish, this is now fully supported natively — no scripts or custom setups required.
We’ve put together a simple, up-to-date guide here:
2 Step Checkout Funnel: When to Use It (and How to Build It in Funnelish)
It walks through how it works and how to customize it properly.
Feel free to reply here if you need any help! 