ODK Collect fails to download forms from ODK Central installed in non-default ports

Hi @yanokwa, I'm using version 1.2 running on non-default ports HTTP_8080 and HTTPS_8443 and this is not working to me. I've disabled ufw and I'm able to connect to the enketo container and reach my domain https://mydomain.org:8443. However, I cannot preview forms or even fill out them from the web browser. I get a popup error message that sais: "There was an error while loading this form...".

On the other hand, I cannot download forms into Collect. I can list them (when using legacy QR code) but when I try to download some of them it fails. The error messages are not very explanatory. In Collect I only get "Failure"...

Thanks!