Iplay 70 mini ultra screen off radio doesn’t work

Hello , i have alldocube iplay 70 mini ultra . I have a problème with background application battery usage permission. The radio application is stopping playing after 30 seconds the delay off the screen lock . I disabled battery limitations for background application and still i have the same problem. Tablette running on android 15 with alldocube os 4.0 .

Thanks for your help .

Please provide the build number of the talet os, as well as the name and version of the app

Hi thanks for your help , i ll attach screen capture of system information as an image.