ERR_Connection_Reset on School Filter

I created this site for my mom to use for her students. The issue is that the site works everywhere else except for her school. When she logs on at work, it says the page cannot be reached and she gets this Err_Connection_ Reset message. It works everywhere else and I’m assuming it doesn’t work at the school because of whatever filters they have set.

My question is asking is there a way to configure the site so that it does work with a school filter?

Here is the link to the site:
https://mathclinic.netlify.app/

@Crissyg923 Something to check would be to see if it’s blocking all sites at *.netlify.app , you could test this by going to any other site with a .netlify.app url.

If it is, then one way around it may be to set up a custom domain (note: This wouldn’t be a free solution).