Newly installed hub red light

I’ve recently had a hub5x installed, unfortunately right as my engineer arrived I had a power cut. The engineer still installed my connection point and plugged everything in but that’s all he was able to do, he wasn’t able to get me connected. Once the power came back on, the hub was flashing red, I’ve tried absolutely everything, I’ve unplugged and plugged back in (including starting from scratch with all the cables), I’ve checked for problems in the area - there shouldn’t be any, I’ve used the reset button all resulting in the same flashing red light. Not sure what more I can do myself