BT Business activated broadband but no internet connection on existing router
I will try to explain this as clearly as possible, as it's potentially a little confusing. I've been a BT Business broadband customer since 2021. I've used my own ASUS router which has always worked fine.
Due to someone else cancelling all of my BT services last week (I won't go into this; there's a complaint with BT), I had to place a new order.
The complaints team at BT expedited the order, and Open Reach switched us back on today. In my house, I currently have the ASUS router (turned back on; it's powered by the wall socket, and an ethernet cable goes into the white box on the wall). The lights are all white, as they were before when everything was working, but I'm assuming that there's a new network name (or something) and I don't know how to make it work! I can't see any new networks, only the ones I had before which can't connect.