The Inveo WordPress/wooCommerce Accelerator module requires at least one of the following PHP loaders:
Zend Guard Loader for PHP 5.6 (64 bit) is available without charge at www.zend.com/products/loader/downloads
ionCube Loader (64 bit) is available without charge at www.ioncube.com/loaders.php
Inveo can assist you with loader installation on shared, VPS or dedicated servers. Should you need any help, feel free to contact us!