Sorry to hear that purchasing from outside of Japan doesn’t work well. Please send me a direct message or email to info@odekakeoffice.jp if you still want to get tickets, which are still available for seats in right side stand. I may be able to assist you.

Wheelchair seat tickets are on sale at;
https://l-tike.com/sports/mevent/?mid=752045

Switch language from Japanese to English at right top on this page. The system says;
Left side wheelchair seats: SOLD OUT
Right side wheelchair seats: A few available

In order to purchase, you are requested to input your email address and phone number to purchase…

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Wilgo provides wheelchair travelers with accessible taxi service from/to Haneda Airport.
https://odekakeoffice.jp/en/

HI, Anita:

Generally speaking, there is no problem in taking public transportations with your powered wheelchair here in Tokyo. You can check the station map of Japan Rail and Tokyo metro at;

https://www.jreast.co.jp/multi/en/stations/
https://www.tokyometro.jp/en/subwaymap/index.html

We are providing wheelchair travelers with wheelchair…

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I guessed so, and sent him a message if he has any solutions.