My iPhone doesn't support most recent update of Xfinity App

I'm trying to access my router (Gateway XB8) to manage my network settings, but I have an older iPhone 8 that will no longer support anything after OS 16.7.11, and the app is telling me that I need OS 17.2 or later. 

Other than upgrading my phone (which isn't an option at the moment), what are my options for managing my network settings without the app?