Thats from the log when Hub was replaced:
Im gonna restart it than few times to see if that gonna help.
So I restarted hub to factory defaults
but ye, nothing has changed.
So I think that only option is a engineer/tech guy visit to see what is going on.
Sorry to hear you're experiencing broadband issues, I'll send you a Private Message asking for more details, please reply to it so I can run some diagnostics.