Akochan wrong parameters

[Mageinta]

I recently got back into mahjong soul with a couple of friends with the 4th anniversary event. Friend is having a rough time, I remembered this tool working a while ago, so we try to pull up some games. But every time we try to pull up an east only game (since mortal only does hanchan) the page we're directed to says

"an error occurred during the task, please check your inputs"

I'm using the latest Google Chrome, don't know if that matters.