FiT change of ownership

A family member has passed away and they owned a solar installation which is with Bulb. What’s the process for transferring the ownership of it and letting Ofgem know?

I took a look at the FiT FAQs but this doesn’t seem to be mentioned. There’s just a link to the registration form…

I spoke to someone on the phone and they said they’d contact the Solar team but that was weeks ago and I haven’t heard anything since.