Looks to be server down. It works fine yesterday. I am sorry I can't help you on that, I am not Japanese and don't speak/write fluent Japanese too
I am sure there are many members here who can help you.
Anyway, here is how honpo works from what I understand. He commissioned the watch (mainly PAM) and buy the WHOLE production lot. I can tell you... it's WHOLE LOT. He has the purchasing power to do that. In this case, he can assure "stricter QC" as well as get the best out of the whole batch. Just mind you, most first batch rep watches are the best one (machining is new, parts and case are made really precise).
Just try again later, the website is correct. If you want to track him, enter this on google search: gangan moo jp
Interestingly, some of the search results point back to RWG to a member known as "none" in Watchonpo area.