Wifi hub doesnt connect to Wifi

[dipanjan]

Wifi hub light is green, but in the app there is no wifi connection.
Have tried connecting to wifi 2.4ghz.. it says connected, but then no wifi signal or wifi control.
It only connects over bluetooth.
Have tried deleting the device and resitalling app. Didnt help.
Did reset the router didnt help.
Sometimes comes up with an error .. coudnt connect to iot server.

please reset my wifi hub so that i can connect to the homw wifi

 

[Administrator]

Technicians have solved the "long connection server certificate" problem.
It's back to normal now.