Dificulty logging into Captive Portal with expired security certificate

Technical Support for Routers
1

As described in the title I have a problem logging into Captive Portal with expired security certificate.
If I use my old travel router, Google Chrome or Firefox will advise me I can enter the captive Portal if I want, but security is not garanteed. With my GL.Inet GL-AR300M I do not get this option.
Who can help??

2

If you enabled vpn, you need to disable vpn first.

You also need to uncheck “dns rebinding protection” and disable “dns via TLS” (in firmware v3.x)

Then reconnect your repeater.