Frogfoot support

I have had fibre of 50 Mb which is supposed to be enough to stream Netflix. Each evening we have a problem with not being able to activate Netflix due to poor connection. Yet during the day all is well. I cannot make contact with frogfoot in any way to find out if fibre has a problem in the area. But this is happening regularly particularly at high tv usage times. And I feel I’m not getting what I’m paying for! Please could frogfoot explain?