XX is in short supply, so sales have been temporarily suspended. We don't know when we can start selling it again.
この場合、次のような言い方ができますよ。
ーXX is in short supply, so sales have been temporarily suspended. We don't know when we can start selling it again.
「XX は供給不足のため販売を一時停止しています。再販時期は未定です」
short supply「供給不足」
temporarily suspended「一時停止」
ご参考まで!