A:Answer I'm not positive what causes this, but I've also experienced the same issue. I believe it happens when one bud is removed from the case while the other is still inside. It only takes a few seconds it seems for this to happen. I've been able to successfully pair mine each time however, and haven't had the issue since noticing this pattern. Follow the these instructions EXACTLY, and you should be able to reconnect them.
Place both earbuds into charging case. Remove both earbuds from case, press and hold the earbud buttons on both earbuds for about 5 seconds, until LED indicator flashes red. Press and hold both buttons again for about 8 seconds until LED indicator turns pink. Put earbuds back into charging case, then take them out again. Open the bluetooth list on your device, forget Liberty Earbuds, then connect again.