@Sherrif Ben
I went directly to the website
www.wbplay.com and registered my account there, which got around the date issue.
But when I tried to login via the LD App, all i get is a rotating ring of yellow circles and nothing happens.
My opinion is that the new version is buggy as heck, so we might have wait until they patch out the bugs.
It even crashed twice trying to start it!
I couldn't make much sense of sharing, but by pressing the button in the upper right corner, it asks you to leave the app (specify age) and then asks you to save a screenshot.
To be honest, I think this could be done much more easily by pressing power+home (iPad screenshot), transferring the files to your computer and then uploading the image to your image hosting site of preference.
But I don't think that would give you the achievement.
I don't have any new packs to scan at the moment, so I will have to wait for my Knight Rider pack to arrive before I can test that out.