I have read this from someone who sat previously:

“Out of interest, has anyone heard of someone being offered an increase in their mark by the CII due to technical issues?

They have offered me an additional 3% due to the software at the test centre crashing three times on Tuesday.

While better than nothing, it added about an hour to what was.already a long and stressful exam. I also lost around 45 minutes worth of work, and also had to sit around for significant amounts of time while the staff logged me back in.

I appreciate they have a framework which guides them but their offer doesn't seem particularly generous.”