No Fibre during loadshedding

Firstly, it is funny how the people rating them 5 stars are all active only since January 2023. And then, Yutility provides fibre via Lighstruck. I am running two lines, the worst is that although we have backup and inverter, the fibre goes off 2 hours into load-shedding. They are not always on during loadshedding as they claim to be.