trading does not work

[Powerchu]

Pikachu90000 and I were testing the trades to see if they work. So I created the trade and it said to have both people confirm the trade. I told Pikachu90000 to try and the trade doesn't show up on his profile and when I tried to confirm the trade it goes to a blank page.

Be aware I am talking about the Trade with this user thing that you find in other people's profiles.