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Sophos blocking a website for one user

This user is having issues w/ two websites. When going to the websites it loads like normal, then gets stuck on the login screen. The user can type in credentials and hit "login", but it will not do anything. Sometimes it does and reroutes back to login screen. Any ideas? She has unrestricted internet due to her job, and even people with restricted internet are able to access. We tried multiple browsers, computers, still nothing just for this particular user.