It’s my first time using the platform.
I have configured an event and a notification added to it. The problem I have is that I only received an email notification of the event. Then I didn’t get any more emails, the hardware has been connected for several days.
The snippet of code doesn’t really help us to understand how and when the events are triggered, which may have an impact on your issue.
as @John93 has pointed-out, you have the limit period set to 1 hour. This means that no matter how many times the event is triggered in the 59 minutes after it is first triggered, no further notifications will be sent. Notifications are limited to 1 per hour for that event.