By default in opencart only the checkout, account, affiliate and admin pages are secured, the main website url is still on http because the http server in config uses http://. If you want https accross the entire website you need to change the http_server to use https:// as well. Tried all these.. ...
Same here.. Ver. 2.2's SSL doesn't work at all... spent 2-3 days on this already..
SSL only work on front page but not any other pages.. either excluded CSS or doesn't show at all..
sent email to them but no reply for almost a week.. thinking switching back to Magento (over engineered but it works)