not able to disable threshold under OpManager version 12

not able to disable threshold under OpManager version 12

Hi,

I'm traying OpManager version 12 functionnalities but i have a problem with editing thresholds.
In fact, i made few notifications profiles and i associated them to windows server 2012 r2 devices and i configured tresholds for test so i got notifications.
The problem is that when i tried to edit thresholds to stop notifications i still have notifications and i couldn't delete thresholds neither by trying to modify the device template or by trying to modify this from the devices snapshot. So i deleted the notifications profiles but i still recieve alarms in my dashbord.
Please tell me how to fix it

Thanks

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