Since Japan Post does not own a cargo plane, we all have to wait till all the international passenger flights are back in their business.
Japan Post use normal passenger flights to keep your postage minimum.
Please check if your country is in the Japan Post shipping suspended list or not.
https://www.post.japanpost.jp/int/information/2020/0423_01_01_en.pdf
However, we can still deliver your order by FedEx, UPS etc (a premium shipping cost apply).