I purchased today one ebook from polish site and when I try to open file .acsm in Adobe Digital Editions I get message Unable to download/Error getting license. License Server Communication Problem: E_LIC_LICENSE_SIGN_ERROR
Is this a problem with Adobe today?
Welcome to the Forum, however this one is for discussing, well the forums, themselves.
I would Move your post, but am not 100% certain, where it should go.
I think that you want this forum: http://forums.adobe.com/community/adobe_reader_forums/ios?view=discussions
but maybe others can direct you. If that IS the correct forum, then I, or someone else can Move the post for you.