If you're trying to sync on a hotel or airport wireless network, it's possible they are blocking the ports that LogTen requires for syncing. If this is the case, you can create a private network between your Mac and iPhone and see if this resolves the issue. To do this choose "Create Network" from the Wi-Fi menu on your Mac (located in the menubar at the top right of your screen near the clock).
Create the network, noting the name of the new network.
Connect your iPhone/iPad to this network from the Settings->Wi-Fi screen of your mobile device.
Ensure that your device has joined the network and that you are seeing a Wi-Fi symbol in the upper left. If you are having difficulty getting your device to join the network try turning the Cellular Data option to OFF from the Settings > Cellular menu.
Close LogTen Pro on both your Mac and iPhone/iPad, relaunch and you should see your mobile device listed and available for syncing.
If you continue to have difficulty send us a support request and we'll be happy to assist you!