@Gdd1146 unless the fibre pigtail cable has literally fallen out of the ONT you can't do anything beyond rebooting the unit. Give Sky a call somthey can get Openreach to check the line.
=========================================================
65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
