EsportsTV (ESTV) was removed from Roku Channel LiveTV a while back.
It was available on Plex, Sling, and KlowdTV until recently. I am not seeing it on these platforms either although still listed on the distribution (where to watch) page of ESTV. https://www.estv.co/distribution
On Sling, there is a message that says "This Channel is No Longer Available". https://watch.sling.com/dashboard/search/1/channel/3368e02c696b447880aa2a990e2ce248/browse
Also, the standalone channel available from Roku Channel Store ESTV+ https://channelstore.roku.com/details/5f5ff0a4872b4c26c4a0e7744cfce849/estv does not go past the loading page.
The only place ESTV seems to be working is on their Youtube page. (older videos). https://www.youtube.com/@ESTV_EsportsTV/about
So, either ESTV is no longer available, or ESTV+ is undergoing some development. https://www.estvplus.co/ (ESTV+ website seems to be under construction as no info under links). However, on the ESTV website, there is a contact link and message form https://www.estv.co/contact. Best to reach out there and see what the status of ESTV is currently.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660x, Premiere+ 3921, Express 4k+ 3941