Then you do not have a SSL certificate setup correctly.
You do not NEED to set "force SSL". It is a warning and recommendation from Limesurvey. if you can't set "Force SSL" to yes, then leave it and ignore the warning. It will not go away. Believe me.
Help us to help you!
Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.
And WHY you don't explain this on the 1st post ?????
(again: why post on another topic).
With some proxies : SSL is need to be disabled between server and proxies. Proxies must be reviewed (because SSL must be activated between proxy and server), but clearly : it's not related to LimeSurvey ...
Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member. -
Professional support
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Plugins, theme and development
. I don't answer to private message.