This transaction is indeed confirmed.

I assume 1L8CvwLjmGQfHqrAN3ez5tRArQxwqJPawi is the deposit address you got from the exchange, and i also assume you were using some kind of web wallet or exchange to send the BTC from?

If these two assumptions are correct, you need to double check that 1L8CvwLjmGQfHqrAN3ez5tRArQxwqJPawi is indeed your deposit address, and if it is, contact ucoincash, since the problem is located on their end.