Hi Ofi
Thanks for your answer, is the same as Menhtaz.
I think would be nice if we can chat. As explained before we do host our own, do not have any hosting provider. Looks you did not read our previous messages or maybe I did explained wrong.
We are working with Joomla since version 1.5, and although we are not programmers, we do have some linux skills.
Our server is installed on a Docker Container ( also explained before ) we are using lastest joomla image for that. This container does have PHP 8.0.x. This should not make any difference
For ex your LMS needs the calendar function and is needed to add this to the docker container. We posted one solution there if helps you for docker installations, so our LMS docker is working Ok whith the example data, but have the same issue with the Composer Pro
We read already your documentation, is the same as your collegue anwered us, this is not hellpful cause you do not say there is how to check we what you need to make it work.
What kind of technical support are we espected to have ? We did purchased thinking it was going to work, and realized we do have some prolbems we cannot solve without your help (not only with SP Page builder). Looks very easy but is not cause this.