Disabled set_time_limit issue

How to enable set_time_limit needed for my site? Please let me know how to enable it.

You can’t enable restricted functions or change php.ini settings

But i need this to run properly my site. Can the hoster change it on request?

No, the Free Hosting Plan has a restrictions that couldn’t be changed.

Why do you need it so badly? Our servers are fast enough, I’m sure your site can work fine within the 20 second time limits.