No idea where to post this : problems with a sitecom md 250 network-storage disk

As in the caption, I have no idea where to post this otherwise.

If a better place is known I would surely like to know (to maximize my
chance to a solution :-) )

The problem : I've quite recently bought a SITECOM md-250 network-storage
disk, and although I can store, retrieve and delete to/from the disk, any
kind of wildcard-searches (either from a DOS-box command-line or by using a
FindFirstFile kernel32.dll function-call) allways fail.

In other words : "drive:\path\*" works, but (something like)
"drive:\path\*.txt" consistently fails.

While Googeling for an answer returned questions about all sorts of problems
with the drive, none mentioned anything like I'm currently experiencing.
Hence my post here.

Any hints, pointers, suggestions or other helpfull sounds will be
appriciated. :-)

Regards,
Rudy Wieser