embedded metadata vs. web page

face to this webpage: https://www.ideals.illinois.edu/handle/2142/109251
my zotero (v. on mac) is able to recognize it as "embedded metadata" and download the right data for the right type of object (a report);
the zotero of a friend (same version, on windows) fails to recognize the data in the pages ans resorts to downloading it as simple webpage.
any idea about the reason of this failed recognition?
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