Attack button not working?

Hi, I changed to a new alliance last night and my attack button is black not blue and I can’t attack the titan. URGENT PLEASE. How do I fix it? Cheers

I’m not sure what is causing this. I could find no solution in the FAQ, so I suggest you contact game support directly:

https://smallgiant.zendesk.com/hc/en-us/requests/new

NOTE: Some requests take longer than others. I would screenshot what you see and post it to game support, and perhaps show it to your alliance so they are aware you are encountering difficulties.