HELP!!! I can't comment on my OWN photos on facebook?

[BeingStrongMeansBeingHeartless]

I have a facebook page, and have uploaded photos to it. People on my page have asked me questions on my photos, but I cannot reply to them. Every time I write a comment, it says "unable to post comment". I have only had my page for a few weeks, and I have never been able to reply in photos comments. This is the ONLY thing not working, i can still comment on status's and everything else. Just not in MY photos.

I tested it with my partner, and got him to comment on a photo and then i replied to him, He did not get a notification, and facebook told me that i was unable to post comment, but if he went into the photo, the comment WAS there.

I desperately need this fixed, I need the people on my page to get a notification if i reply to them.
Does anyone know why this is happening? How can I get it to work?