Here's where you can find a workaround about how to change default polling interval:
But apparently this is not working so I also created an improment request for your dev team related to your requyest at link below:
Statuspage customers logged more than 194 years of collective incidents in 2018. That’s a whopping 87% increase from the 104 years logged in 2017 , and we aren’t even through December yet....
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