Play img media source failed on ios

I create blueprint projec and config it for ios .
Now I try to play img media source , everything is well on PC, but falid on IOS.

Following is my steps:

1.create blueprint project;

2.config for ios;

3.create media player(auto play when open ) and media texture;

4.create img media source and select img sequence;

5.create umg and select img component as background image, image source is media texture;

6.open media source in level blueprint;

7.package into .ipa;

8.install it on ipad;

9.open the app ,and media texture is black.

Thanks.


update :

now I print media open source return,it always show false on screen.

ImgMedia is only supported on macOS, Win32 and Win64 at this time.

Thank you very much.