WordPress Error Fix & Relaunch

My WordPress site is currently offline and I need it returned to a fully live, stable state. The front-end shows only a blank screen and, inside the server logs, I can see PHP warnings tied to a few key plugins. In short, specific plugins or features are no longer functional and that has taken the whole site down.

Here is the help I need:

• Take a complete backup of the files and database before you touch anything.
• Investigate the root cause—whether it’s a theme conflict, outdated plugin, PHP version mismatch, or corrupted .htaccess.
• Repair or replace the affected plugins, clean up the database if required, and verify compatibility with the current WordPress core and PHP version.
• Bring the site back online, confirm both the public pages and the admin dashboard load quickly, and run a final test to prove the broken features now work as expected.

I will give you cPanel, FTP, and WordPress admin access the moment we start. Once the site is stable, please send me a short report outlining the issues you found, the exact steps taken, and any preventive recommendations so we can avoid downtime in the future.
Parse error: Unmatched '}' in /home/ibharcan/public_html/wp-content/mu-plugins/endurance-page-autoload.php on line 41 and other possible causes like redumx error