I have been using tp-link TGL-SG108 unmanaged switch with an older tp-link router for awhile without any issue. I have a Western Digital external HD, Lutron Caseta bridge, and raspberry pi wired to that switch. 

However, since I connected the switch to my main Deco X60 unit (the one that is set as router, connected to modem), those devices are offline in Deco app. Any idea? Should I get different switch? And if I do, what switch has been proven to work with X60?