How to change English text in Forms
Using the English translation file, you can change the strings in the plugin. For example, you need to change the tab string "Post" to "My Posts".
1. Copy the English (United States) translation files ( ultimate-member-en_US.po and ultimate-member-en_US.mo ) from /ultimate-member/languages.
2. Paste the translation files to /wp-content/languages/plugins/
3. Download from www.poedit.net and install the Poedit application
4. Open the English (United States) translation file ultimate-member-en_US.po in /wp-content/languages/plugins/ using the Poedit application.
5. Search the text you need and change it. In this example we changed the "Post" text to "My Posts".
6. Save changes. It should change the text.