I was able to have SSL certificate for my website. But when I used incognito or other devices, this reminder shows: Your connection to this site is not secure.
URL also shows http only instead of the secure one https
Your HTTPS works fine, however they/you will need to manually input the HTTPS with the site link instead of auto-redirect/rewrite.
Please read this KB article from infinityfree to learn on how to auto-redirect all users or visitors into an https secure website instead of only http.