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I have a strange issue. I am trying to log in to my school's website, but I cannot. I tried my school's I.T. department to ask why I was blocked. After checking my file, I was not.

The same thing is happening to Firefox, Chrome, and Safari. I checked to see if two other browsers did the same, Waterfox and Vivaldi, and this happened,

It worked. Why? Any thoughts?

Thank you.