Cancel Security Subscription without router

Hi I brought a router last year and had the security on it. This year in June I moved and don't use the router anymore due to new place not having internet included anyways I didn't realize I signed up for the auto renewal for the security and it came out of my account. It was part of my rent. 

 

 

 I sent them a message on Tuesday and haven't heard anything back yet. Is there a way I can cancel it myself if I plug in the router? The app won't let me in the settings or anything without the internet working. Also how can I delete my card information out of the website?

 

Thank you