My current one that I bought back in 2014 (or 13?) won't start up unless it thinks it has a network connection. I've actually setup my router to just block all

My current one that I bought back in 2014 (or 13?) won't start up unless it thinks it has a network connection. I've actually setup my router to just block all traffic from it, but let it on the network so it'll actually work as a panel. Otherwise it has an unskippable menu demanding to be given the wifi password (or hooked up over ethernet).