Acestream don´t works fine in my TV BOX

I´ve bought a new TY BOX the “Mecool Km2”, and Acestream don´t works properly i´ve any time the error message “unknow device invalid session id.” or similar, I´ve in home some others devices like Fire TV 4k and Xiaomi Tv Box and i have´nt this problem in this ones.
Can you help me ? I had prouve instaling Ace Stream Media and Ace Stream Engine, and in both of them i´ve the same problem.
Best regards.

Are you sure that such messages is Ace Stream related? Can you provide a screenshot or photo of TV screen with such error message?
Also, please note - for Android TV devices “Ace Stream Live TV” is more preferable app.

AceStream LiveTV is only available for Android, not Android TV.

Due to DMCA strike “Ace Stream Live TV” not available in the Google Play market for the moment, but you can side-loading it from Products - Ace Stream DAO

I never tried it, but all versions under Ace Stream LiveTV are for Android. If it works for Android TV, it’s better to specify it.