About the setting of the tower in the endgame

The tower's stele cannot be changed is an extremely unreasonable setting，This setting will harm players who have just entered the endgame, I ran into a problem like that. I unlocked the map of the tower and activated four stone tablet slots, but at that point I only had one stone tablet. The system kept prompting me to complete the task of inserting the stone tablet. After I finished the task, I found that the stone tablet couldn't be changed anymore, and I won't have a chance to fill in the other three stone tablet slots later. It should be totally normal for players to change the stele. I hope the game can add the feature for players to change the stone tablet in the upcoming versions.