Obsolete or corrupted firmware is one of the primary cause behind the Orbi satellite RBS50 not connecting issue, especially after automatic updates. Check Latest Firmware Version: Access the online interface of your Orbi router via http://orbilogin.com or using the Orbi app. To verify the firmware version of both the router and satellite, go to Advanced > Administration > Firmware Up... https://orbiloginmesh.net/orbi-satellite-rbs50-not-connecting-step-by-step-troubleshooting-guide/