Unable to add the lead event to my Facebook Pixel


Hi all,
I am launching a Facebook ad where prospects will get a piece of downloadable content in exchange for their name and email.

I have a landing page set up to capture the info.

I’m trying to add a lead event to my Facebook Pixel.

I’m running into problems at the point where I have to enter my website URL.
SEMrush

Here is a video of me going through the process.
https://www.loom.com/share/dd6d3c7c16ac41d3b75c439d4017ae1a

when I could not fix the problem I turned on the automatic event setting. Will that be helpful?
Any advice would be greatly appreciated.