My guess is one or both of you do not have your firewalls properly configured. See How to use Bitzi Web Lookup ... & How to use Magnet Links & Direct Connect

Another way to get connected to each other is to send a magnet link of one of your files to them. Once they load it, they will connect & can browse you. Likewise you could then browse them from the Upld window of the Monitor window.

Both of you should do this test: Bug Report instructions & sample image Is the result True/False? If False, then there's something partially blocking LW. Probably an ill or non configured firewall or modem/router.