Some external WMS/WMTS/WFS layers do not load in Lizmap

Hi,

In my Lizmap project, some external WMS layers do not load at all. I tried different sources and formats (WMTS, WFS), but the issue persists.

The strange part is that these layers work perfectly in my QGIS project. Additionally, some WMS layers do load correctly in Lizmap, but others (such as Natura 2000 layers) fail to load.

I have checked the Lizmap logs and inspected my project configuration, but I don’t see any obvious issues.

Has anyone encountered a similar problem or has an idea of what might be causing this?

Thanks in advance for your help!