happened to me too. you got to declare war on sorc king get him to 5/5 threat. easiest way to do it is research tower of mastery. that always kicks him off. or wait for him to threaten you with something like a juggernaught and declare then I guess.
there was an old thread with this problem, maybe something which is suggested there works for you.
For me its the other way around, i only need 1 key to open the gates ...
I thought this was something that was fixed in an update. I assume you are running the latest version of the game?
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