Plugin not working for WP Pages, working for WP Posts

On installing the plugins, it first worked by showing secure or padlock on Chrome and Edge. After a few minutes, I realised that this changed for pages. For pages, the status remains as i or no padlock. No cacher is running for my site. It is on siteground hosting. URL, for examples are: https://www.cateringpenang.com/penang-food-catering/ and https://www.cateringpenang.com/contact-us/ . These url are pages. The posts work fine with the word secure and padlock for chrome and edge. Please advice how to fix this for pages.