Thanks for your hard work. Unfortunately re-install didn't work. I nuked the "pro" directory from "wp-content/themes" and installed fresh. The max__execution__time is 300 from day one. Also max memory 1M of 4M system. I suspected the OPcache so I invalidated it and still.
Cornerstone is only active on one subsite. It is not active on other subsites using PRO.
This is the php version I have in case
PHP 7.0.29 (cli) (built: Mar 30 2018 18:15:35) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
** with Zend OPcache v7.0.29, Copyright (c) 1999-2017, by Zend Technologies**
Is it okay to revert XPro back to a version 6 months older without reverting the DB schema? I have to update the site while I figure out what I need to do about this going forward.
Thanks for your help