First make sure there is another Wi Fi connection available besides the Wi-Drive and that you are connected to it. Then try the following:
1. Reveal all running apps and close the Wi-Drive app.
On iPad or iPhone, Double tap the Home button.
Hold down on the Wi-Drive App until it has a minus ( - ) in the upper left corner. Pressing and releasing on the minus will close the App.
On Kindle, go to Settings (little cog at the top right) --> More --> Applications
Filter to show Running Application
Click the ones you want to close and choose Force Stop
For other Android devices, refer to your user guide.
2. Reboot the Wi Drive and the device and then go into network settings and make sure the Wi-Drive network is selected and connecting.
3. Press your Home button on your device and open up the Wi Drive app and see if detected. You may have to press on the home icon 
4. If you're still faced with the problem, the next thing to try is to go into the Wi-Fi Settings of the device and “forget” the Wi-Drive network. Refer to your user guide of your device for this.
5. Go back to the device’s Wi-Fi Settings and try re-joining to the Wi-Drive network again.
8. Then try step 3 again.
If you are still having problems, please replace the drive or contact technical support.