Before you commit time to something.
WHAT TO CHECK
PHP version required, against what your plan offers PHP extensions required, against what is available Database type and version Memory requirements Whether it needs persistent background processes Whether it needs system packages or root access Disk and inode requirements
WHERE TO LOOK
The application's own requirements page. Every serious project publishes one.
WHERE TO CHECK YOUR SIDE
cPanel > Select PHP Version shows the version and available extensions cPanel > MultiPHP INI Editor shows limits The statistics panel shows disk and inode allowances
WHAT USUALLY BLOCKS AN APPLICATION
A required extension not available Persistent processes, which shared hosting does not permit Specific system software Very high memory requirements
IF SOMETHING IS MISSING
Many extensions can be enabled under Select PHP Version. A few cannot be supported on shared hosting, and we will tell you plainly which case applies.
ASK FIRST
Open a ticket describing what you intend to install. It takes a minute and saves discovering a blocker after a week's work.