CSV Export to FB

I posted this in the incorrect place to begin with so reposting it here

TLDR: External URLs not exporting with CSV
I tried using FBs pixel to import all my products and that was a failure.
Now I am using a CSV, export was pretty straightforward. Some columns needed renamed ex. “In stock?” needed changed to “availability” and the 0s and 1s in the column needed changed to “in stock” and “out of stock”. Im going to change the spreadsheet so it automatically does it for anything brought into it in the future.
My only hold up now is the “link” category FB wants, it should be exported as “External URL” but the entire column is blank.
When I am in the individual products edit product page they also show a permalink at the top. Short of copy and pasting these how do I get it to export with the CSV

The page I need help with: [log in to see the link]