I purchased and put these on my umbrella today and they aren't coming on. I made sure it's on auto and the solar panel is turned upright. suggestions?

Ensure your lights are in the ON position, with the solar panel facing the direction with the most sun. Make sure your lights are located in an area that receives at least five full hours of sunlight each day. Allow the solar panel a few days in full sunlight to build a full charge. If this still does not work, Lowe's will be happy to provide a replacement.