I have EE smart Hub 2. Why is this relevant.

Three possible reasons.
1) As has been discussed in the thread, you could have been talking about Home Mobile Broadband. Not landline broadband. There are many on these forums that no longer use landline broadband, me being one of them. (See my sig).
Knowing the router tells us which.
2) It�s quite possible that a particular router is known to have a fixable problem of this kind.
3) With anything except the simplest of computer, broadband, WiFi or related problems where the answer is often well-known to �geeks�, an experienced diagnostician needs the maximum possible information.
Which you subconsciously realised, because you posted in the Windows forum so we can be fairly sure of the OS, you told us the make of the laptop, you told us the provider of the service and by implication that the router is also from EE. All of those are relevant

.
My broadband basic info/help site -
www.robertos.me.uk. Domains, site and mail hosting -
Tsohost.
Connection - Three 4G, tbb tests normally 35-45Mpbs down, 65Mbps off-peak, 9-24 up.
==================================================
"Democracy means simply the bludgeoning of the people by the people for the people." Oscar Wilde