Firefox 52 warning message https

-- HikaShop version -- : 2.6.4

Hello,
From the recent Firefox 52 version, there is a warning message about the insecurity of using no https...
This give this message ("Cette connexion n'est pas sécurisée. Les identifiants saisis ici pourraient être compromis" in french on this screen capture) witch is very bad for our customers...

We understand that we need to transfert our web site to the https but we didn't expected to do it before the begining of 2018, (301 to manage)...It seems that we are several to be in this situation (HS demo also...).
Is there any solution to hide the Firefox message probably with a css on our website...but I don't find how with Firebug (active...?)?
Thanks for your helps, suggestions and ideas.

Hello,

I'm afraid that it not related to HikShop ; the login module you're mentioning is the Joomla login module.

And please note that our demo website have HTTPS support
demo.hikashop.com/index.php/en/

Regards,