The Myth of the "Web 3.1 Default Username and Password": Navigating Next-Gen Security
If you are using the common biometric web interface (Web 3.1), here is a brief review of its performance: 192.168.3.1 - Login Admin - Router Network
No legitimate Web 3.1 service will ever ask for your 12 or 24-word recovery phrase.
If you cannot find a sticker, you can try these common defaults based on popular "3.1" versions: