Phone [Q] Cubot P9 - Camera Not Working

Hi, I'm new to XDA-Developers and I'm hoping to find some help with my CUBOT P9.

I've had it for a while, and I've never been able to use the camera, gallery crashes whereas with Snapchat I can get the front camera to work, but not the rear.

I'm really frustrated with this as I hoped the camera to be working as I use the camera for a long of things.

Would Custom-Romming it deal with the issue? I'm new to android but can easily follow instructions.