The error message:
Warning: set_time_limit() has been disabled for security reasons in /usr/home/site.com/web/wp-content/themes/wpresidence/libs/pin_management.php on line 44
The theme has this code pin-management for speed but some hosting companies disable the safe limit –http://premium.wpmudev.org/forums/topic/warning-set_time_limit-has-been-disabled-for-security
If hosting cannot help raise that restriction (on shared servers they may not do that) – please see if setting in wp-config debug to false works. http://codex.wordpress.org/Debugging_in_WordPress
If that doesn’t work, next step is to comment the code at the line mentioned in the file so that it does not apply anymore. But remember that code is good for site speed purposes.
How to comment code:
In pin_management.php line 44 is
You can comment/delete the code. Do backup before if this is the first time you make code changes.