Alliance Changes

Hello, for some really odd reason i can not change my kurzick alliance over to luxon. In the past with my other guild i was able to. Everytme i hand over the 500g to change he gives it right back. I have 0 kurzick faction , and 657 luxon faction. Yet still when i want to change over i can't. How can i solve this problem, have any of you had this same problem?

Are you still in a Kurzick Alliance, with more than just your own guild in it? You may need to leave or disband that Alliance first before defecting