Mi 9T (redmi K20) grayscale enable issue

Device brand and model:

Xiaomi mi 9T

Ratio version:3.3.5

Problems encountered when using ratio:

the gray-scale doesn’t work it looks enabled but doesn’t in fact work had to roll back to 3.3.4 so it can work

Working fine in my Samsung galaxy A50 with v3.3.5

Revoke the permissions. If it doesn’t work, grant again permission with ratio tool.

Please let us know if it’s fixed after granting permissions again

It works now IDK why