使用 しよう可能 かのうじゃなかったです
shiyōkanōjanakattadesu

Noun
Desu Copula
na-Adjective

The polite, past negative form of 使用可能

1. Wasn't able to use.; Couldn't use.; Wasn't possible to use.

Past/Perfective
Negative
Polite
Casual Register