The old NitroPack needed to be uninstalled. After removing, the website was broken. It looked like NitroPack had overwritten the built-in Cach feature of OpenCart. In addition to this, some extensions got errors after removing of NitroPack. We had to uninstall the extension as well. Beyond this, this extension has the worst customer support.
~The Lizard

OC3.0.2 running Journal 3 - 100% Pagerank, 100% GTMetrix. This extension is worth every penny and support is outstanding. A couple of teething problems at first which were quickly fixed by Simon and the team. Highly recommended!!
~Damian Scott

This does NOT install correctly. I went to the point of dumping a website to do a clean install. Ut still did NOT work. I would like a refund. Very bad and a waste of money/time.
~workbooks