Exporting to Android

Hi Guys,

I’m new to Unity and I have a problem with my 2d game, when I export and install it in my mobile device (android) the player, background & foreground doesn’t come.

In Unity everything is working perfectly in game mode.

Any ideas how could I resolve the issue?

Thank you in advance!

Unity set-up
5056592--496445--upload_2019-10-11_19-59-17.png

unity Game View:

Mobile View:
5056592--496454--upload_2019-10-11_20-4-39.png

You probably published without a scene selected in the Build Settings dialog. That looks like the SampleScene