I purchased ICab Mobile, installed and attempted to upload a trial photo -- to no avail. Used the ICab browser to visit the ATP web page. Navigated to the "Upload an image" button. The moment I clicked on the "Choose Existing" option -- it simply disconnected. Same result after multiple attempts.
Thank you to everyone who responded. I'm not sure about "misery loves company" but I do feel a lot better knowing that this issue is not relegated to only my iPad. Hopefully Apple will realize the scope of this problem and address it sooner rather than later.