DynamicPage with refreshInterval not updating when first or only preferences page

[nayelyz (SmartThings Developer Support)]

Welcome, @raven42! Can you give me more details about the purpose of your SmartApp, please?
For example, why the refreshInterval is needed.
The code you shared is from a Groovy SmartApp, which is part of our legacy platform. It’s important you look at the announcement below so you can take precautions.

Announcement | Changes to our Legacy SmartThings Platform

Changes to the Legacy SmartThings Platform The explosive growth of our community and platform over the past few years has been an amazing experience for all of us at SmartThings. We have you to thank for building, innovating and growing with us as we push the envelope to what is possible in the connected home. Today, we wanted to let you know about the next evolution in our journey. We are making some important shifts in our strategy to best position our platform for the future and investing more deeply in improving the stability and security of our platform. With these changes, we will empower a broad ecosystem of developers to integrate and innovate with SmartThings using technologies of their choice. Over the course of the next several months, we plan to focus on the development of a …