Update: My mistake in giving this one star my first review. It appeared to be fully assembled upon arrival except for attaching the bottom post. I assumed I didn’t need to read the instructions. But what I missed is that you have to connect the power cord under the solar panel. Now the lights work perfectly ~ and I love this umbrella! 
First review:
I really wanted to love this umbrella, but the lights do not work, even after “charging” the solar panel in the sun for several days. I am unable to reuse the box it came in to return, and it’s now out of stock, so I can’t try replacing it. Very disappointed.