Ive done everything and I still can't upgrade my castle anyone know why , I have 26 lands all low lands and 1 highland can anyone help ?
Try completely rebooting or reinstalling the game. Close it out of the multitask bar as well. Then click on castle and see if Upgrading is an option. If it still will not let you upgrade send a ticket to Support@AThinkingApe.com and ask them why.