Meanwhile, I created another install without the extra fixes so I could test your savegames and confirmed the problem. And I've no idea how it happened. I've never seen that happen in any version of the game I've played, from stock unmodified, through numerous Build Mod versions, including the May 2018 version. Nor do I recall seeing a report of anything similar. Which means whatever caused it is probably not fixed in the newest update.
On the other hand, it shouldn't happen in the newest update, and for that matter shouldn't have happened in the May 2018 version. I used some console trickery to give myself the idol, zap myself to Cozumel, make Danielle an officer, and trigger the conversation with her and Clement. Then I made my way to the temple, through the labyrinth, and was able to place the idol.
You had the "Mysterious Plants" sidequest active. This was horribly bugged in the May 2018 version, but although I'd normally give up at this point and blame any problems on that quest, I'm pretty certain that it can't be responsible for the inactivity of the idol square. You also had the "Nigel Blythe" quest active, which was also bugged and also can't be responsible for fouling up the temple. Both quests have been debugged and should work better with the updates installed.
By the way, if you want to see Danielle as your partner in crime while playing as female yourself, try this. Start as Nathaniel or any other male character. That should make the game give you Danielle; the check is made right at the start of the game and not repeated. Now go to a tailor and buy any female outfit - you can get a better one once you find it and have the money. You're now female and so is Danielle.
On the other hand, it shouldn't happen in the newest update, and for that matter shouldn't have happened in the May 2018 version. I used some console trickery to give myself the idol, zap myself to Cozumel, make Danielle an officer, and trigger the conversation with her and Clement. Then I made my way to the temple, through the labyrinth, and was able to place the idol.
You had the "Mysterious Plants" sidequest active. This was horribly bugged in the May 2018 version, but although I'd normally give up at this point and blame any problems on that quest, I'm pretty certain that it can't be responsible for the inactivity of the idol square. You also had the "Nigel Blythe" quest active, which was also bugged and also can't be responsible for fouling up the temple. Both quests have been debugged and should work better with the updates installed.
By the way, if you want to see Danielle as your partner in crime while playing as female yourself, try this. Start as Nathaniel or any other male character. That should make the game give you Danielle; the check is made right at the start of the game and not repeated. Now go to a tailor and buy any female outfit - you can get a better one once you find it and have the money. You're now female and so is Danielle.