I recall those data are requested for my private use only !!!
This is internet and an open site, and anyone can pretend to be whoever he chooses to obtain internal information for whatever reason.
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Contrary to what you said LOAs are not parts of AIPs and are not for public domain. they are cooperation agreements between ATS units and for internal use.
I support the suggestions by Lone More and Avman to contact the
PR people at Maastricht and identify yourself to them first.