The Riddle wrote Only when I select EXTERNAL ANTENNA the entire chain works, if i set vertical or horizontal no ping, no internet.. ...in this condition i still experience the issue of disconnection:...

antonioninato wrote however i always wonder about flashing the firmware with a higher version but i never did because i didn't want to risk damaging the device but i always had the funny feeling that...

If you replace the router by a switch, you need to use static IPs for all devices (especially for your laptop, but also for the Cams and the NVR). A switch just interconnects the devices, it does not...

Assign each switch an unused static IP from your network. Don't use DHCP if you chain those switches. As for the VLAN: if you just use one VLAN, you don't need it at all. It just does not make sense...

The Riddle wrote What about the External antenna thing?? For this distance you don't need an external antenna, but if you use one, select "External Antenna" in the menu. Should be a directional...

Did you try a Linux or MacOS (UNIX) system already? Windows is known to sometimes display a blank page only for the web UI of TP-Link switches. With Linux and MacOS I never had this kind of problem...