Suddenly can not join enterprise server with an internet connection, Exclamation Mark in front of WiFi Symbol

I started a new contract this week and they gave me credentials to access the network with something like this:

Username: newjob\CodeUrban

Password: Welcome123

It worked on Tuesday this past week, but this morning on Thursday, the WiFi icon had an exclamation mark in front of it. I was connected to the network but with no internet.

Now, I work in the automotive industry and they offer no to little support on macOS devices.

It is strange to me that it worked for a whole 2 solid days and then when I booted up my MBP16", its gone. It is frustrating as I need a internet connection for transferring files.

-I have forgotten the network, entered the credentials still noting.

-When into /Library/Preferences/SystemConfiguration/ and deleted some of the suggested files online and reboot.

-Entered manually the SSID and credentials

Anyone have an idea what to do?

Also, since I am a contractor at this facility. I have little contact with the IT department as all they have to do is provide the credentials.

Thanks.