[gujal]

This addon works in 1080 or 4k on xiaomi mi box s? I have change alot of options but only sd works, can anyone help me please? Thanks and thanks for this great addon!

Seems to be a box running ageing S905X hardware from 2016

Code:

https://www.androidcentral.com/xiaomi-mi-box-s-review

The review makes it clear that at best it can do 1080p, even though it claims to be 4K.
I presume it will do 1080p if it is Widevine Level 1 Certified. Only the Global edition is Level1 certified. The default edition is only Level3, so at best it could do 720p same as my no name S905X box
Run DRMInfo app from playstore and see what Widevine Level your box is  running at