A note from the playfish forum:
If you receive a message that your account has been suspended due to suspicious activity, all you need to do is wait for approximately 24 hours, and then try to load the game again. You should then be able to play the game again.
Thinks that can have triggered this to happen for you is:
You have sold too many items in a short period of time
You have sent too many messages in a short period of time
You have found too many treasures in a short amount of time
You will need to wait for your account to be re-enabled. Submitting a support ticket will not make the process go any faster.
So hold on, wait for 24 hours and try again.