Internet Sharing problem! [Closed]

Registration date
Friday July 3, 2015
Last seen
July 3, 2015
I have modem router combien in one device, i bought it from internet provider.
System windows 7
My computer is connected to internet via bridge mode
The I.T guys said that only one computer can have access to internet only because there is a problem in their servers ( 6 days now ago )
i must write my phone number and internet password to connect :(
i want to share internet with my brother and father.
i have a good usb wireless adapter
I try to netsh but got nothing ( used to do it when i had no internet issues )
Ad hoc... :( when i make it i get diconnected from internet automatically and from my modem too!
Please i'm so lost
See picture:

And check my router model and configs: