ZTE ZXHN H267A Wi-Fi Internet Problem

Hi there,

I have BigSur 11.6 verison installed on my MacBook Pro 15" Retina Late 2013

I was able to use it with any modem before but today I came to a different city for a short holiday and I need to be connected very often during this holiday. But here they have ZTE ZXHN H267A Modem and even the other mobile devices and also Smart TV can connect to the modem without any problems, my MacBook can connect to it but cannot open any pages. I ran the wifi diagnostics and the result was " your MacBook is connected to a modem with no internet connection" which there is a connection on my iPhone 6s.

I am desperate on finding any solution to this. Could anybody help me on this situation?

Thanks

Emrah