my icon is not saved in the build (IPA) Help !!!

Hello, I have a problem that I have not been able to solve and I already have a headache. Using version 4.17 although I assign the icons in the unreal configuration, when I install it, I do not take any icon. and made a blank project to see if it works and remains the same. try to do the same but with version4.16 and this if I left the icon, the problem is that my project does not work with 4.16. I do not know what I can do. Also probe with 4.18 but the same happens with 4.17.
Thanks in advance for the help.