Apple PDF viewers barely work with regular Acroforms and don't work with XFA forms created in LiveCycle Designer. Even the mobile versions of Adobe Reader don't work with XFA: Adobe Reader Mobile and XFA forms from LiveCycle Designer | Adobe LiveCycle Blog .

2D bar codes won't work with Adobe Reader, but will work with Acrobat, so open the PDF in Acrobat to test it out. There's no such thing as LiveCycle Reader, but for 2D barcodes to work in Adobe Reader you can use LiveCycle Reader Extensions (Forms and extension modules | Adobe LiveCycle Enterprise S...

Acrobat can't enable normal file attachments. It can enable commenting, thus allowing Reader to attach files as comments, which is a manual process. This process can be initiated via JavaScript, but the user still has to navigate and select the file to be attached. LiveCycle Designer can create stat...

When you Reader-enable with Acrobat, it does not include the usage right that allows Reader to add file attachments. Reader does allow user to add attachments as comments, and it can be done via JavaScript, but not with a dynamic XFA form.

If this is an XFA form created in LiveCycle Designer, you should post this question in the Designer forum: LiveCycle Designer

Not the end user, but the person who is distributing the form to the end users. That Acrobat license allows the licensee to Reader-enable documents and distribute them, but it does not allow the licensee to sell Reader-enabled forms to someone else who distributes them.

You would need to get LiveCycle Designer, though it's called something else now. Here's a forum you can ask about it: LiveCycle Designer

If you want dynamic tables, you'll need to create them in LiveCycle Designer. You can create static forms in LiveCycle Designer based on an existing PDF, but you can't make such static content dynamic in LiveCycle Designer.

Moved to the Liveycle Designer forum: LiveCycle Designer

Reader Extensions is server-based software from Adobe that is used to add usage rights to a PDF. These rights allow Adobe Reader to do things it normally cannot, such as digitally sign XFA forms. Acrobat Pro can also add the digital signature usage right at a much lower cost.