Home Ed IGCSE frustration

[tempo]

I'm teaching my son (who is half Italian) IGCSE Italian, using the Cambridge course as there are no controlled assessments (apart from the speaking exam). Their website provides a link to a "Teachers Resources" page but unless you are a teacher at a registered school they will not give you access.
I have just spoken to someone at Cambridge who said, yup, if you are doing home ed or private tuition basically you have no access to the extremely useful resources all other teachers have.
How can that be fair?
I'm so frustrated, why should home ed kids be penalised?

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I noticed that recently, Edexcel let you access it I wonder why CIE don't!
There is a very good exams group for HE on FB if you are on there, someone may be of some help.