Bluetooth is problem to macbook?

Hello Everyday~

When I recently bought new LG Versa, I like to use it. At my first time, my Macbook can send my pictures to my Versa with bluetooth. That was surprised me!! COOL. However, three days later, I'm so confused my versa can't connect to my Macbook!? I tried to turn off both Versa and Macbook to on, but they still can't connect for bluetooth. I tried to add new device, but my Versa says "No devices Found. Try Again?" and I tried my macbook to find device but can't find.... I'm so confused why??

Please let me know as soon as possible!

Thanks,