So I tried to bring my pet into the arena tab, but it did not show. I switched to another pet and same thing happened. I closed all beastkeeper tabs then reopened it, same thing. It just has the slit of the background paper like texture, like if you go to pound after you used it but there is no message. I can send my pets to arena, but I can't go there and battle them by hand. All the other pages look to be working. Is this a problem on my end? Is there a way for me to fix this?

It looks to be fixed now, don't know why it was acting up.