@Watchowner No, https://tplinkwifi.net/webpages/login.html doesn't work either. I get the same error - Attackers might be trying to steal your information from tplinkwifi.net (for example, passwords,...

Sorry, I misreported Chrome's behavior. Chrome 78.0.3904.108 (Official Build) (64-bit) reports this, and no option to override. "10.0.1.1 normally uses encryption to protect your information. When...

Furthermore, the certificate is so bad, Firefox can't interpret it.

@Watchowner Now (December 2019), Chrome no longer provides the option to "accept the risk" and proceed to a site with a self-signed certificate. Neither does Safari, but the current version Firefox,...