From what you've said, it sounds like that before you were able to search for items by locations and now that tab is not available. For example you could search for items that were available for shipping to Japan and now that option is no longer available.
I did some research for your question and it looks like that recently there have been some changes made on our site. The reason why we took off that column is because before our Japanese members could view all the items that were sold on eBay (even the ones that did not ship to Japan) and now with these new changes, you only see the items that ship to Japan.
お客様のお話から、以前は場所で商品を探せたのに、今はそのタブが使えないように伺えます。例えば、以前は日本に配送可能な商品を探せたのに、今はそのオプションが使えないということですね。
お客様からの質問について調査しましたところ、最近サイトでいくつか変更を行ったようです。どうしてその欄を取り除いたかといいますと、以前は日本のお客様はeBayで売られている商品のすべてが表示されていましたが(日本に配送できない商品も含め)、今はいくつか変更をし、日本に配送可能な商品のみが表示されるようになったのです。