Thecus OS support

Just wondering if any updates from Plex for Thecus users. At the moment I cannoy use Plex.
Furthermore, in the Plex app description in Thecus it says - "Latest Plex version https://plex.tv/downloads and choose NAS ->Thecus-> INTEL 64-BIT " - But I cannot find this anywhere. Is this a typo? If so, how can I get the newer server version for Thecus so I can go back to my library.
Thanks

I have no experience with Thecus, but it may have to do with the model:

Mine is the N4810.
At least partly its thecus not having enough presence maybe for big companies to care. A lot of the apps on it are outdated and hence unuseable. Shouldnt have bought it for ‘value’