They logged into our commander accounts and did it by there. We already sent all info to the support about whats happened. They moved out the alliance army this is how they took our Central and Eastern castles. Just have a look on our alliance military messages, then you will see how many attacks we defended. They conquered our empty castles because they sent alliance army out. They had no chance to do it when alliance army on its positions. Thats a cheat again, second time on our alliance.
I undersand your situation and all irony and bitterness
But as many alliances you share your pass among you, some your teammates play on other realms in other alliances with the same pass and somehow your opponents got pass, you can also be "contaminated" with infiltrated player from the opponent's alliance. Maybe it is not honorable playing but this is basically a strategic war game and in war all means are permitted and in war there is no honor, "the end justifies the means".