Detection issues notification delay and ghost bell rings then nobody at the door

Hey what is happening just bought and already big issues with detection and notification delays and I have bell :bell: ringing after sombody rang like 10 min ago. This bell becoming totally useless. Help anybody know to solve this issues? Should I return it as using less then 3 weeks?

Which type of doorbell do you have? Considering the problems arise so quickly after installation, it may be a faulty device or incorrect set up.