I have the same issue, so I asked Buffalo EMEA support, and this is what they said (word for word):
Be aware first of all that anything stated on the Buffalo forum is valid for the North American region. Their firmware have differences from ours, therefore what you read in there might not be applicable in EMEA (Europe, Middle East, Africa).
The only configuration page we support on our unit is indeed the main page you are taken to when typing the IP address of your NAS in the web browser. Any other modification is not supported and if bricked that way will void the warranty of the product.
The fact that the port 9050 has been closed is to prevent the above from happening. Future releases will have the same behavior I am afraid.
The firmware for EMEA seems to be identical to US except for LSUpdater.ini and linkstation_version.ini.
The changes are for added products, but the sections for LS-WXL are the same.
It seems that all other files are binary identical.
I leave the interpretation of the message above to your imagination (my interpretation of the above isn't exactly positive).
Btw, he says port 9050 was closed, but that isn't entirely true. The page which should be present isn't, but it shows the blank page as everyone else mentioned.
The TM favicon is also displayed (in firefox at least).
I have a LS-WXL (Linkstation Duo).
Buffalo EMEA doesn't have forums, so I guess even europeans end up in these forums.