Since many elements of the e-junkie site run as Flash Objects, e-junkie sellers wishing to access their account via Safari on the iPad will find a mostly blank page when you go to log-in.
Here is my simple workaround to access your e-junkie account from an iPad.
I purchased the "Photon Flash Web Browser" app, which loads flash websites remotely on their server, and then pushes the visual interface to your iPad.
It's a good bit slower than accessing it on a laptop or desktop, but completely functional. I mostly use it to view transaction/download logs and send free download links, but you can do everything available on a desktop or laptop.
There may be other options out there, but this was the one that I found, and it works just fine.