Broadband/wifi problem

[Gnina]

I have big problem with broadband/wifi,  over the last couple of months, but in particular last 3 -4 weeks And it  nearly every day. the amber button on my router flashes,  then 3 green and. I have received messages from you saying open reach will fix now you have text for my help. . I have run test this morning and says all good  but I'm trying to watch sky app and then tried on TV app  but it's soo slow and slow on iPhone.

Router is old, perhaps a new one?