I’ve taken the liberty to split your post into a separate thread, since this most likely ain’t related to firmware, but to your setup
So let’s go through your issues one by one, and for future ref, please keep one issu pr. thread
Why, when we advice against it?
When a server is not claimed, https isn’t up running, so simply use http instead to claim
Ref: Qnap faq.....read me first!
This could be due to:
- not using private address space for both the server, as well as the client claiming it
- Server and workstation claiming it, is not on the same IP net
- Browser used has some plugins, that is blocking the detection of the server
See this Wiki:
If I had a dime for every time people are saying this, both Plex and I would have been rich 
