Please Help! Can't export form data into Excel (Lifecycle form)

Bernd is right. With the export data tool, you can easily export the data of your form into a XML file. That XML than can be opened with Excel for example. Depending on the XML structure excel will show the data either in one or multiple rows. 

In Acrobat at Tools search for "export data":

So what you need to do is Export the data. In Acrobat Pro there is an "Export Data" option in Prepare forms mode. You do not want to put this PDF in Prepare Form mode, but if you use the tool search to find the Export data option you can just click on it from there. 

Data Export can also be exported with a script from the console window.

xfa.host.exportData("",false);

This will save the data in XML format.  Unfortunately it doesn't work in Reader.

The data in this file has repeated sections, so it's hierarchical, and in multiple layers. Importing it into Excel will not be easy. 

LCD forms are very difficult to work with, as you've seen.

I think you can use this simple code to export the values of the fields to the console window, and from there copy them to Excel (since they are tab-delimited):

for (var i=0; i<this.numFields; i++) {
	var f = this.getField(this.getNthFieldName(i));
	if (f==null) continue;
	console.println(f.name+"\t"+f.valueAsString);
}