May I ask how to get to the Luminous Order's base? I can't seem to find a way to get there after starting the peace with the Luminous Order sidequest.
If you have the quest, it should automatically trigger the next step when you get to the area I showed in the screenshot.
Unless you're on android, you could send me your save file to Naughty-Netherpunch@web.de so that I could check if you have some sort of bug. The saves are in the www/save folder. I only need one .rpgsave file with the save slot number in which you have the issue.