Reply To: Change mentionname to displayname in “cover-image-header.php”
> I replaced the indicated line of code in my child theme’s cover-image-header.php with yours. Not only does the Display Name not appear (only the “@” appears), but everything following it (tabs of user activity, etc) disappears. The page just ends.
Sorry, there was a typo in my original response. I wrote bp_displayed_user-id() instead of bp_displayed_user_id().
When the page stops rendering like this, it means that there’s been a PHP fatal error. If you’re going to be modifying PHP files, it’s a good idea to get familiar with either your server’s PHP error log, or the WP_DEBUG constant. See https://codex.wordpress.org/Debugging_in_WordPress
> Any insight into what I may be doing wrong would be appreciated.
Hard to know exactly what is going on without seeing your site. For the template, my guess is that you have copied things into the incorrect location in your child theme. The template overrides only work if the directory structure matches directly, as described on the codex page linked above. So, the path should be something like wp-content/themes/your-theme/buddypress/members/single/index.php.
For the CSS, it could be that your theme is using different CSS selectors for page titles. (.entry-title is used by some of the WordPress default themes, so I guessed that it might be in use on your theme too.) Use your browser’s inspector to get the proper selector. Here’s a useful tutorial: http://toolsqa.com/selenium-webdriver/finding-elements-using-browser-inspector/ Once you have found the id/class of the element, replace .entry-title in my snippet with that.
