But, if she/he just goes to amazon.com, I'm not sure PF gets the donation.

I had Ben check into this problem for you and he thinks you should now be able to see the page. But, the link on the page to Amazon is broken, meaning you can't click on it and have it open to Amazon. But, you can copy and paste the link into a browser window and get there that way. Let us know when you try again if you were able to see the page.