I solve my bug by using my tablet vs my cell.
My cell is a better technology than my tablet. I don’t understand why I can’t pair whit my cell ???
After I pair whit my tablet, I can control the system whit both (tablet and cell).
I have an hotspot at one feet of the HRS 400. The hotspot is connect to my router in the house by Ethernet. My signal WiFi is around -30dBm.