Unable to use night mode or reading mode after uninstall

Hi! I want to uninstall Ratio, but I uninstalled by system settings(one plus 5t) and now I can’t use night mode or reading mode. I want to know how to completly uninstall this app. thank you and a i expect a fast response.

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The easiest way to solve this would be to reinstall Ratio launcher. Go to Ratio settings and disable "Enable Greyscale/Color mode changes. That should solve your issue.

Yeah, but when i want to reinstall, blloc desk say error device offline

Go to Settings > System > Accessibility > Turn off Color Correction.

Thanks! That solve my problem!