Homebase 2 and 2c cameras

We’ve purchased the homebase2 and 2 2c cameras. We put them up and they were working great for 3-4 days. Then one night both cameras went offline for no apparent reason. The only way we can get them to work is to delete the whole system, reinstall everything. HOWEVER they then only work for about half hour to an hour tops then they both go offline again. The signal is great on both cameras and bout cameras are fully charged. Please help! We’ll soon be boxing them all up and sending them back and we’ll try a different manufacturer!!