Problem with continuous play :(

After the most recent update, the app wont play unless the phone is on (not with lock screen) and the app is open to the storm track of your choice. If you change screens or your screen goes black, it turns off. Before the update, I could play the app for 1 solid hour while using other apps or while the screen was black. This is extremely disappointing because I rely on this app to drown out the sound of my noisy upstairs neighbors. Please fix this soon!!!

Storm Dreamer about Sleepmaker Storms Free, v6.0