|Definitely don't "eva" post a password here (or any other forum); likewise an active email address or phone number...; nor any software keys...|
You have a Sky router - and the model you describe is an updated version of their "in house designed unit..." My Sky router is a Sagem - tweaked/locked down by Sky...
Typical Sky, your actual Sky dsl/broadband account user-name and password are hard coded into it; not easy to discover what that is, but usually it can be done.
The login ("user" name / password) to the "setup/management area" is:
admin /sky and - you get there by using the address 192.168.0.1
As per this link - from Sky "support"
Wifi routers broadcast their SSID - not the serial number on the unit. And being Sky your router's default SSID will be skyxxxx (x = a number); the actual number of "numbers" may vary depending on the router.
The access-key (frequently incorrectly called the password) is also set as a default - and that access key can be changed by the end user.
On some/all Sky routers the default SSID and its access key are on a label on the base.
When you try to connect to the sr102 do you enter its correct access-key - the one that is on the base sticker?
If you haven't changed the default wifi access-key (many don't), and haven't set up any kind of access-congtrol option, then a true reset will simply re-establish the defaults for the wifi service; and nothing will have changed.
If you have changed the default wifi access-key, and/or setup some kind of access-control, then a true router reset will erase those changes "you" have made to the default settings. Such changes/preferred setting will have to be re-entered.
Your actual Sky broadband logon details (which allow you to connect to Sky broadband) and likewise the default " admin / sky " for the setup area will not have change.
But if you changed the default " admin / sky " details (they allow you to access the wifi and other setup areas) then they will have reset to the defaults "a admin / sky ". And that default is what you use to access setup etc. - after a router "reset".
So... what happens when you click on (select) the ("your") Sky router and enter its access-key?
Be sure you're trying to access "your" Sky router; not a neighbour's. I have both Sky and Virgin wifi-routers/access points all around the area where my modest 16 bedrooms, 8 bathrooms, semi detached mansion in its own 10,000 acres - is in SE London/NW Kent. So one has to be sure one is trying to connect to one's own Sky router (hub).