I have setup firefox to drop all cookies when closing and whitelisted a few websites I still need to bear cookies. Upon using the above link, I ended up on a p

I have setup firefox to drop all cookies when closing and whitelisted a few websites I still need to bear cookies. Upon using the above link, I ended up on a paywall. I hit F12 and check the creation date of all the cookies and confirm they had all been created the 19th (today, and incidentally had just woken up and turned on the computer). I refresh the website, still paywall. I delete all cookies manually for that page, hit refresh and can read the whole article. I don't understand how this is possible.