Hmm more complicated
Steps:
1. Go to your main Blockland folder and get your saves (Base/saves) copy them
2. Delete your thing (I mean everything) in the main Blockland folder
3. Install installer (Click
Here)
4. Run installer and send the files to your main blockland folder
5. A shortcut should appear on the desktop run Blockland type in original key (One you bought first).
6. Good to go.