Sky broadband keeps disconnecting from my devices

[EmmaML]

For some weeks now my broadband keeps disconnecting from my devices.  All lights are green on the hub and the system checker says that there is no issue.  I get the message "connected without internet" on my phone and it switches to mobile data.  I have restarted the router and checked that there is nothing blocking the signal.  This is now happening several times a day and I am at a loss as to what the problem is.  Thinking of switching provider.

[Eski]

Yes, we've been getting this lately. Spoke to sky and they re-set the the router and it seems better but we are still having some issues.