One of our users is trying to log on to RE NXT on her personal Mac Airbook for the first time, after logging on successfully on one of our network PCs. She enters her details, then gets an error saying “You seem to be blocking a necessary URL.” Then it links to this. We have tried it on her home internet network vs organisation, tried clearing cookies (on Chrome), tried opening in Safari but it just wouldn't load the page. I couldn't find out how to allow specific URLs on Chrome, nor on Macs. Has anyone encountered this before?