My apologies for the late reply, I hadn't seen there was a Page 2 and was under the impression I went unanswered when it was the other way around, my mistake.
My NIC is set to private is it is a home network and that's always been the case, if that makes any difference.
Sorry for such a late reply again, I honestly don't understand the question. I'm familiar with plugins being saved to Jellyfin folders locally, but are they also installed to each web browser, or am I misunderstanding something?