oh and forgot something very important.
4- Are you playing the demo or the sub version?
Answer:
4- I'm playing the sub versión.
I'm using a saved file of the v0.23.0
2- No, they're not assigned to any job.
1- I tried assigning them individually, but it won't let me select the "accept" button when I place them so they receive skill points.
3- ist only for the skill points, the problem does not apply to gaining experience