Issue third party app requires zend optimiser 3.X.X

[JohnnyType2]

i'm having issues installing Zend Optimizer 3.x.x

I am running php 5.2.17 on the specific joomla website which requires ZO 3.X for one of the installed extensions, on an Ubuntu 16.x install

the latest version of plesk onyx auto update running.

the site seems to run zend in a form called xcache? i'm not familiar with this. i have installed the correct zend version 3.3.3 in a folder on my server and added this location to the additional php.ini file via the plesk console as i have read i cannot add this manually as it will be removed/replaced by the plesk install.

when checking if the Zend optimizer is active on my website i get the below message...

 

[JohnnyType2]

ion cube is runnig im guessing for the plesk files? can i run optimizer and ioncube. i have several flavors of php across a couple of different sites.