Maybe you're posting them at the wrong time of the day.
Maybe not many people look at their SNS at that time of day.
この場合、次のような言い方ができますよ。
ーMaybe you're posting them at the wrong time of the day.
「1日の間の悪いときに投稿しているんじゃない？」
ーMaybe not many people look at their SNS at that time of day.
「人があまりSNSを見ない時間なんじゃない？」
ご参考まで！
Maybe you should consider changing the time you upload your posts.
ご質問ありがとうございます。
・「Maybe you should consider changing the time you upload your posts.」
（意味) 投稿する時間を変えたら？
<例文>Maybe you should consider changing the time you upload your posts. Don't post early in the morning.
<訳>投稿する時間を変えたら？早朝に投稿するのやめたらいいと思う。
参考になれば幸いです。
カナダ 
アメリカ合衆国 
