I published one power apps using for asset tracking, backend record is using sharepoint list, when I test power apps in computer "Play" screen, all thing normally, apps can read my sharepoint list record and can show all option when I want to create a new item, it also working well in iphone power apps when I just publish this app, this period is keep about 2 weeks, but after 2 weeks, my team mebmer told me this apps cannot working normally, if we want to add a new item, power apps in iphone will show black screen, we tested 3 iphone and tried in different network enviroment, still not working, but it still working at computer "Play mode", and I checked sharepoint list also working normally, but a few solw than before, we also tried to remove and re-install power apps application in iphone, but still not working.
I have already no solution for this case, looking for your support.
Thanks in advance.