Hello there. I am using a sonoff 4ch pro rev 2 to control my pool lights in inching mode. Because it had a connectivity issue I removed it from the app to set it up from the start. Since then I can’t figure out how to connect it again. I am pushing any button for 7sec to put in pairing mode but it doesn’t work. I was sharing the device with my mothers phone. Is there anyway to reset the sonoff to factory settings?