Are you using the free version with 15 button limit? or did you create a group limiting the button display? If the button config is generated, you must see the button, unless your view is limited by any of the reasons I mention...

I am using full version, trunk button included in a group, but don't appear on panel.

If it does not appear, it is probably because you do not have that group in your account? There is no reason for the button to NOT appear, that is quite different to now showing activity. you can try to catch me on the live help to chat, the forum is quite slow to work this out.