For correct work of application:
1) In “Settings ⟶ Battery & performance ⟶ Power” turn OFF “Battery saver”.
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2) In “Settings ⟶ Battery & performance ⟶ Manage apps battery usage ⟶ Choose apps ⟶ Prof Reminder” select “No restrictions”.
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3) In “Settings ⟶ Permissions ⟶ Autostart” turn ON Prof Reminder.
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4) In “Settings ⟶ Permissions ⟶ Other permissions ⟶ Prof Reminder” turn ON “Start in background”.
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