After I did build (press launch) then I lost sounds from FMOD. Ordinary sounds work perfectly. What could be the problem?
The most likely situation is that the banks aren’t being packaged up. You will need to add FMOD as a directory in the packaging settings.
See this page for more info:
Another common problem is that you are launching on a different device, which will look for different banks (e.g. iOS and Android look for banks in a FMOD/Mobile directory, not under FMOD/Desktop).