No matter what I do I cannot buy dungeons whenever I press the purchase button it does nothing. I forgot all my dungeons and it did nothing, I disabled all my mods and it didn't help. I am out of ideas, please help.

Edit: It seems to be something related to extended mod loader but I don't know what

Machine translation.

Since I could not solve the problem with the other methods, I will note my solution.

I do not recommend this method because I do not understand the logic. If you do this, please make a backup.

In line 984 of input_handler.gd, replace active in active_location.descript and active_location.classname with selected, respectively.

Next, in ExplorationModule.gd, at line 2152 and below, replace all selected_area with active_area.

Finally, rewrite the selected_area in line 893 of InteractiveMessageModuleAnimated.gd to active_area so that dungeons can be purchased.

I solved this by overwriting the game files with a fresh unpacking from the zip folder. Just drop it into the existing game folder and overwrite all files.

Although, working around this was an interesting challenge too; you can still get dungeons through quests, and their scarcity makes them more valuable.