For correct work of application:
1) In “Settings ⟶ Device maintenance ⟶ Battery” turn OFF “Power saving mode” and make sure that Prof Reminder is not added into the list “Always sleeping apps”.
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2) In “Settings ⟶ Apps ⟶ Prof Reminder ⟶ Battery ⟶ Optimize battery usage ⟶ All apps” turn OFF Prof Reminder.
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