Localization does not translate everything

What exactly causes the engine to not translate some words properly?

For example in the game there is a level with text and every time i test it out localizing it
the text remains in english?

What can i do to fix this please? Localization in my game is a huge problem.

Strings are never gathered in the localization tools. All strings need to be converted to Literal Text.

yes it works

I have similar problem