I use an SSL certificate on my domain and together with Codoforum, I unfortunately get the message that the SSL together with CF only works limited - so there are probably files or scripts which are not offered or integrated via SSL or secure enough.
Can it be that the FreiChat server of you does not run on SSL?
If so, here is a tip:
There is a free really good SSL certificate that anyone who has SSH or shell access can easily activate and use for free. The provider is part of the Linux Open Source distribution and calls itself Let's Encrypt - maybe that would be something for you at Codologic?
Here is the link to Lets Encrypt Service:
Kind regards, Andy
🚽 planing my next project 🪔
Check my GitHub Repos: https://github.com/WebCrew
My CrazyMates Account: https://crazymates.de/Crazymate