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System settings / Smart Assistent / DuraSpeed Find Gentle Wakeup in the list and enable it. Application Basic Service / App Manager […]
No. The night mode is optional. You can even close the app and it will reappear on wakeup time.
(Maybe not all changes are required. Try for yourself and report back please) Settings / Smart Manager / Auto-start Turn off Automatically […]
Device Settings / Apps / Manage apps / Gentle Wakeup (or Settings, Installed apps or App Management) Enable Autostart Device Settings / […]