Hello,
Thanks for your feedback!
I looked into the copy issue and found the possible bug, the data structure of ships was changed and not updated in the copy function.
It should be working correct in this update.
You can create a ship from scratch by pressing the "core" button on the bottom right, you will be able to place down a core, press tab when hovering over the core or use the small hammer button under the ship to start editing the ship, new buttons for each available block will show on the bottom left for you to select and place on the core :) You can also use the upgrade button in the bottom right to open the upgrade window and unlock new blocks or upgrades for blocks.
Hope this helps,
1ButtonWonder.