Hisense Smart TV's

[tom80H]

I suspect your tv supports no modern connection encryption and is therefore no longer supported.
There’s been an announcement approx 1 month ago that this will happen to older models

Plex support is ending 2020-09-30 on older smart TV devices

On September 30, 2020 we will be ending support for the Plex app on some older smart TVs. These devices are unable to use modern, secure connections when communicating with our services. A non-exhaustive list TVs that are potentially affected by this include: LG models running “Netcast” (the pre-webOS system) Vizio models running “Presto” (models using a Mediatek chipset) Older Hisense models Panasonic (2014-2016 models) Pre-2016 Samsung models, running v1.x of the community Samsung Smart Hu…