Hey @kemkme , thank you for your message! (Just to note, please let me write in English here as I don’t speak Japanese.)
I understand the concern. Even though you cancelled your plan a few months ago, your past invoices are not lost. They are simply no longer visible in the product after cancellation when you downgrade to a free Starter plan.
I’ve gone ahead and create support ticket on your behalf, so our Support team can provide your previous invoices. For reference, your ticket number is 1614174/ Please check your inbox when you have a moment (exxxt@kxxxxxs.cxxm). If they need any additional details to verify account ownership, they will ask you directly in that case. Once confirmed, they will send the invoices you need for your company’s invoice. Thank you!