Ricky,
The simple answer is that you are having connectivity issues. The problem is that the difficulty can be anywhere from the WEMO device to your network, your gateway/router, something on the Internet, or a problem your cell phone's connectivity. You might contact Belkin, but I wouldn't expect too much help from them.
Frequent connectivity issues have been a big problem with the WEMO products for me as well, and I work in these sorts of technologies professionally. To be fair to Belkin, this "simple" remote control involves lots of technology operated by multiple companies, and spread over a lot of territory. OTOH, I frequently can trace my problems to the WEMO device itself dropping the connection to my local network, and I have measured the wi-fi signal strength at the device, so I know it has adequate signal.
Bottom line: WEMO is a so-so technology which has privacy issues as well, and it can be a pain in the neck to use. But I don't know of any competing consumer product that is any better.