TLS, unknown player error and *.plex.direct

LOGs please so I may see the player error ?

There is a selection of interesting log lines in my post description. Did you see them?
Do you want a complete log output? I can send it to you in PM to avoid too much anonymization.

There are MANY televisions impacted by the 30-Sept-2021 LE certificate expiration

Yes and these TVs are impacted, that’s why I switched my plex certificate from Let’sEncrypt to ZeroSSL which is also free but doesn’t have an expired RootCA in less than 5 years hardware.

Doing this fixed TV access to the server and direct play.
Please note, this is a better solution than the one proposed by Plex, which is in a nutshell, disable security on these devices.

When transcoding, the only solution is to disable security, which led me to discover that another (and bad) certificate was used somewhere when transcoding was involved.

Do you know why PMS is NOT using my valid certificate to access my server?