Doorbell chime (2025 Update)

I had a doorbell with a digital chime . I replaced the doorbell with a SimpliSafe video Doorbell . The new doorbell was not chiming the full tune unless the doorbell switch is kept pressed. I researched online and found that a diode across the doorbell switch terminal is to be provided to get the full tune in one push of the switch. I checked the old doorbell switch and there was indeed a diode (IN400. I took out the diode from the old door bell and fitted across the new doorbell switch. The new doorbell switch now does not chime at all. I removed the switch and just connect the terminal with a wire across the diode. Still no chiming. I did the whole thing reversing the terminal of the diode without any result. I took out the diode , and fitted the new doorbell again, and it works as before , i.e chime only a part when the switch is kept pressed. I talked with SimpliSafe. They told the doorbell is not compatible with digital doorbell. Any suggestion about how to make the doorbell work properly, i.e to play the full tune with one push of the doorbell switch.