何をしようとしましたか？
After 20 races, a new engine was supplied, and the engine was acquired.
そして何が起きましたか？
The number 4 was provided on the headquarters screen, but the actual stock quantity is 2, which is insufficient.
問題が発生した時はwi-fi、データ、または両方を接続していましたか？
Wi-fi
バグはアプリかPC、または両方で起きましたか？
PC
PCのOSは何ですか？
Mac OS Sonoma 14.8.3
どのブラウザで問題が発生しましたか？
Google Chrome
何をしようとしましたか？
It is currently unknown as it will be 20 races from now.
追加コメント：
Originally, it was understood to be parts supply only. If the rule was changed to include engine supply in manufacturing, I think the information should have been communicated more widely.
The two newly supplied engines caused unintended token usage, which is extremely unpleasant.