He wants me to allow remote control into my computer system, which I won't do, for him to have access to the i5 and see if he can do anything about it.
Andrew did this for me and fixed my issue in about a minute. I watched/chatted with him while he did it and saw every step of what he did; it's not like you give him your passwords or anything.I terminated his access at the end of the call. Apple Support does the same in certain cases. I considered myself lucky to have this high level of support. Andrew's a high integrity person, IME, and many others have attested to that here and elsewhere on many situations over many years.
FWIW, the issue was caused by a Roon update, nothing with the SGC. Cheers,
Spencer