If you want to change the title of a membership feature you must do the following:
CONTENT >> EDIT POST SETTINGS
Find the membership feature that you want to rename and click on Edit, for this example, we are going to use the Member Article feature.
1. General Settings Tab (Your unique name for this type of post):
2. Profile Page Design Tab (This is the title that is going to show up on the Member's Profile):
3. Search Results Design (This title is going to appear when accessing the actual search results visible to the visitors and other members)
Once you changed all of the names you can click on Save Changes.