Any idea why I appear to have 2 routers for my wifi

[PaulAndrews]

When I joined Sky a few months ago i got a router SKYxxxxx

When I had issues recently I noticed another router available called SKYxxxxx-ext.

Can anybody give me an explanation why there are two now?

[JimM1]

@PaulAndrews If it is the same name, have you added a Booster/Range Extender that is not from sky!