Notice: Some services and parts of renge4.net and my other domains are served securely using certificates signed by my own Certificate Authority. This is done to fight crawlers using Let's Encrypt transparency logs to spam my servers with malicious requests. Your device does not trust these certificates by default, for good security reasons. As such, you need to install the root certificate to automatically trust these sites. Before visiting those sections, please visit the setup page and follow the instructions there. If you do not trust me to do that (good), you can also dismiss your device's warnings, but it may cause issues or not be possible in certain scenarios. Thank you for your understanding.
TL;DR: certain sections use a self-signed CA. Install the root cert or check the cert and dismiss warnings.
THIS WILL ONLY TAKE EFFECT STARTING FROM 1.8.2026!