@Bakary Here is the test for you to run below, the booster one you have not supplied any info so that is also linked below few helps for you!
This is for the nightime if you get caught in that then there is nothing that can be done!
Important Information: Scheduled Broadband Mainten... | Sky Community
This link below provides information about the coloured lights on the various hubs that can help to see what is going on! If the system is also Full Fibre then the lights on the OR/CF ONT also require to be looked at!
https://www.sky.com/help/articles/hub-lights-explained-start
And about boosters
https://www.sky.com/help/articles/sky-wifi-booster-what-do-you-need-help-with
If this does not work for you, call sky by dialing 150 on your landline phone!
