I have just taken the mock exam for the 16/17 tax year and found that any questions that required me to check/uncheck a box did not work in my browser. I am assuming this is a browser issue as the rest of the exam where I had to enter figures worked fine.
I am using Microsoft Edge and wonder if there is a recommended browser that should be used for exams? I have done the mock and obviously don't want to do the live exam if I can't answer some of the questions! :)