How do you say "for some reason" and also "anymore"
is it 이유에서인지 and 이제?

이유에서인지 이제 공부안해요.
For some reason, I don't study anymore.

Question

How do you say "for some reason" and also "anymore"
is it 이유에서인지 and 이제?

이유에서인지 이제 공부안해요.
For some reason, I don't study anymore.

Answer

"For some reason" means directly "어떤 이유에선지" , but more natually said "여러가지 이유로". The translation is wrong.
"not~ anymore"means 더 이상 ~않다. In this sentence, we omit "더 이상" 'cause it still make sense with "이제" which means "now" or "at this moment".