Hi @Khaoula, 

Thats not really what you want to see during the installation. 

As i can see from your picture. This connection point looks to be in the living room. The Modem need to be installed direcly on the ISRA connection. 

Can you check if there other connection point in the house, problably in the fuse box.

it might look like something like this. 

btw, also might want to remove the photo since your address is on it ;)