It's not stuck for more than two weeks but is heading for your country now. As it's sent by using China Post Ordinary Small Packet Plus which is a cheap service of China Post. China Post doesn't provide tracking service for it after it moves for some stations in China. So, you can't get more update after July 16. It usually takes about 40-60 days to be delivered. If you couldn't get it in time, contact the sender to give you a solution.