Hi Wasi,

Welcome to the Box Community, I'm happy to help!

Do you mind providing us a screenshot of the options that are available to you when trying to mark a folder for offline use so we can take a closer look?

Looking forward to hear from you!

Regards, 

Can I make only folders available offline? I want to make files also.

me too, why wasn't this question answered?

I have the exact same issue.  Makes box drive unusable.  Dropbox does this so much better.