All translations are located in a folder "language" in every extension.
For example, you will find the language files of Crowdfunding Platform in the following folders:
administrator/components/com_joomfunding/language
components/com_joomfunding/language
To change the text, you will have to use Joomla! Language Manager to override the constants that contain the text as a value.
Here you are more information about how to override translations.