Now, it restored. But there are many missing folders. Is it because it is in the process of restoring?

Hi Gonzalo, 

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

If its a pretty large folder, that might be the case, the items within the deleted folder might still be in the process of restoring.

I would suggest giving it up to a day then check again, if some items are still missing, you can submit a ticket to product support here so the team can check the progress for you.

Thanks for posting and let us know how else we can help!

Regards,