Can't sign into modem

I have been trying to sign into my router and the username and password listed on the bottom of it does not work. I also can’t find it online. On the bottom it says it’s a Technicolor CVA4004TCH1. It’s not even listed on the Technicolor website. The only search results I get for “technicolor cva4004” appear to be either fake malicious websites or a website called cox that doesn’t tell me anything relevant. When I go to the address that’s listed right above the username and password, it brings up a page that says technicolor DOCSIS 3.1 Cable Modem, but again, the login does not work. I’ve searched the internet for an hour now and have found no solution.