828LM goes offline for minutes or hours. (controlling a gate csw200501U) The Internet Gateway completes the open or close command. Command confirmation can be in seconds or hours. Until the command confirmation is received the app is useless and froze up and off line. It comes back on line by itself. Gate is 170' line of sight from 828LM. To be sure it was not weak signal, I also installed a EXA-1000 remote antenna with vertical radials. No improvement. That suggest signal not the issue?