I have started a new game with custom settings a while ago. Recently I noticed, that I am unable to purchase island shares from other islands or sell shares of my own islands. The button to open the window for selling or buying shares is just not visible, when looking at an island.
I am also unable to conquer an island by force. When attacking an island and destroying the harbour buildings, a new screen pops up, where my only option is to click on accept. However, I do not take over the island.
Is there an option I could have toggled while customising the settings, that disables island shares or conquering islands? I searched for this in the options for a new game, but could not find anything.
Please let me know, if you need further information from me.
P.S: I've sent the save file through the support website as described.