Emisive color missing after baking (or package android)

Hi i’m not shure when, because i thought i have done with this(so i don’t look at that), but my emisive material stop to work.

Here screenshot. Material should look like reflection in water (and looks like this in past).

What i done after last time i remember that this work good is bake light and try to do android package (i can’t do it at all, here my threat about it : Can't package project on Android AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure) - Platform & Builds - Unreal Engine Forums).

Thank in advance and sorry for my poor english.