WiFi- Not Working

[Charlotte_Croc]

My TV, laptop, Security Cameras, Echo Dot and phone say they are connected but can't access internet. 
The app says there is no problem but there is! 
how do I sort this out? 

[caesarome]

@Charlotte_Croc 

Try a reboot of your broadband hub, leave it off for a few minutes before powering it back up then waiting a few more minutes to see if everything then works.

[Charlotte_Croc]

I have done this repeatedly since I got Sky Broadband. 
this has been a long standing issue.

The only thing that can connect to the internet for long periods is one of my TV's and it lags throughout watching Films.