How to access router after Bitdefender box installed?

Hi. Before I add Bitdefender BOX 2, my router can be accessed by going to or x.x.1.0 for my Tp-Link Router. After I installed the Bitdefender BOX 2, I am no longer able to access it. Please advise. Thanks.

Reason I want to access the router is because I want to hide a network from being visible to people.