Server Version#: Version 1.15.3.876
Player Version#:
allow fallback to insecure connections is set to never, but plex seems to be ignoring that and doing it anyway. why? on web client general settings it even alerts me that “connect to the web app is not secure” and offers to “reload securely”. this is the same page i see the “never” on “allow insecure fallback” setting
Secure connections between your Plex server and the clients are one thing.
Loading the web app into the browser is another thing.
Your web browser is complaining about the latter. And it is easily mitigated by using app.plex.tv
If you load the web app from the IP address of your own Plex server, you won’t have a fitting cryptographic certificate for this IP address. And this is what the browser is complaining about.