To remove items from your base click them and press the F key. Cancel selection button is E, Duplicate is T and R to move the item. the gui doesn't want to show up. The loading gui some times doesn't show up when you first join, please rejoin a different server and it should be fixed.

Working on fixing issues and revamping the tycoon. Guns should now work correctly, I have also boosted the currency of some mines to make completing the tycoon a lot quicker.