False "Intrusion Detected" and Aeotec Siren not working

I have two issues last couple of days. First the One of the Multipurpose sensors sends false “Intrusion Detected”. I checked the windows, theye were locked and at both times the trigger was same sensor.

Second, the siren which used to work fine, now, does not make noise when the intrusion is detected.not sure why.

any help/suggestions?

Which device handler are you using for the siren?

I am not sure what is device handler. Iam using smart things hub with aeotec z4 siren. App installed in iOS.