At the time of night you've both posted it could be maintenance taking place. Whenever possible this is carried out overnight to keep disruption to a minimum as most customers are asleep. If it hasn't returned by the time the phone lines open in the morning you may need to give Sky a call to report it.
▪️I AM NOT A SKY EMPLOYEE (undercover or otherwise) ▪️
Sky customer since 2001
with: Sky Q | Sky Superfast Broadband | Sky Talk | Sky Mobile
NOTE: I only provide help on the forums and NOT via PM
